My JSConf.eu talk about next-gen JavaScript metaprogramming features, starting with ES5's new Object APIs and then focusing on the forthcoming Proxy object, approved for the next ECMA-262 Edition. This is beautiful work from Tom Van Cutsem and Mark Miller, with Andreas Gal helping on the implementation front -- proxies are already shipping in Firefox 4 betas.
Love it or hate it, JavaScript is playing an increasingly important role in the next generation of web and mobile apps. As code continues to move from the server to the client, JavaScript is being used to do more than simple HTML manipulation. Be prepared for this transition and make sure the JavaScript you write is optimized and ready to perform on desktops and devices! In this session, you will learn ten practical tips that you can use today to write faster, more maintainable, memory friendly JavaScript.
Great design patterns are reusable, modular expressions of what’s going on in your code. They allow you to communicate to other developers simply by the way you code, in addition to being easily maintainable themselves. Put simply, patterns are the available tools in the developer’s toolbox.
In this presentation, I review a few common patterns, their advantages/disadvantages, and how they can be implemented.
The source for this presentation can be found here: https://github.com/derekbrown/designpatterns
The document discusses JavaScript objects and functions. It explains that JavaScript objects are collections of name-value pairs similar to dictionaries. Functions in JavaScript are objects that support function call operations. The document also covers constructor functions, prototypes, closures, and namespaces in JavaScript.
This presentation will give you a brief background to JavaScript, what it is and where it comes from. Then it will walk you through general pitfalls, best practices and more advanced topics such as object-orientation, scope and closures.
This document discusses ES6, the new version of JavaScript, and provides an overview of some of its key features including classes, iterators, lambdas, string interpolation, modules, and let block scoping. It encourages readers to begin using ES6 today by leveraging transpilation tools like Babel that allow ES6 code to run on current browsers and platforms. The best resource mentioned for learning ES6 is the Babel website, which contains tutorials, a live code editor, and helps developers get started with ES6.
An introductory presentation I'm doing at my workplace for other developers. This is geared toward programmers that are very new to javascript and covers some basics, but focuses on Functions, Objects and prototypal inheritance ideas.
PyFoursquare is a Python wrapper for the Foursquare API that allows developers to easily access Foursquare data from their Python applications. It currently supports searching for places and retrieving place details, tips, and user information. The wrapper follows a similar architecture to Tweepy, representing each Foursquare entity as a model. Developers can authenticate their app, make API requests, and access results as model objects. The project is open source and the author welcomes contributions to support additional Foursquare entities and features.
My JSConf.eu talk about next-gen JavaScript metaprogramming features, starting with ES5's new Object APIs and then focusing on the forthcoming Proxy object, approved for the next ECMA-262 Edition. This is beautiful work from Tom Van Cutsem and Mark Miller, with Andreas Gal helping on the implementation front -- proxies are already shipping in Firefox 4 betas.
Love it or hate it, JavaScript is playing an increasingly important role in the next generation of web and mobile apps. As code continues to move from the server to the client, JavaScript is being used to do more than simple HTML manipulation. Be prepared for this transition and make sure the JavaScript you write is optimized and ready to perform on desktops and devices! In this session, you will learn ten practical tips that you can use today to write faster, more maintainable, memory friendly JavaScript.
Great design patterns are reusable, modular expressions of what’s going on in your code. They allow you to communicate to other developers simply by the way you code, in addition to being easily maintainable themselves. Put simply, patterns are the available tools in the developer’s toolbox.
In this presentation, I review a few common patterns, their advantages/disadvantages, and how they can be implemented.
The source for this presentation can be found here: https://github.com/derekbrown/designpatterns
The document discusses JavaScript objects and functions. It explains that JavaScript objects are collections of name-value pairs similar to dictionaries. Functions in JavaScript are objects that support function call operations. The document also covers constructor functions, prototypes, closures, and namespaces in JavaScript.
This presentation will give you a brief background to JavaScript, what it is and where it comes from. Then it will walk you through general pitfalls, best practices and more advanced topics such as object-orientation, scope and closures.
This document discusses ES6, the new version of JavaScript, and provides an overview of some of its key features including classes, iterators, lambdas, string interpolation, modules, and let block scoping. It encourages readers to begin using ES6 today by leveraging transpilation tools like Babel that allow ES6 code to run on current browsers and platforms. The best resource mentioned for learning ES6 is the Babel website, which contains tutorials, a live code editor, and helps developers get started with ES6.
An introductory presentation I'm doing at my workplace for other developers. This is geared toward programmers that are very new to javascript and covers some basics, but focuses on Functions, Objects and prototypal inheritance ideas.
PyFoursquare is a Python wrapper for the Foursquare API that allows developers to easily access Foursquare data from their Python applications. It currently supports searching for places and retrieving place details, tips, and user information. The wrapper follows a similar architecture to Tweepy, representing each Foursquare entity as a model. Developers can authenticate their app, make API requests, and access results as model objects. The project is open source and the author welcomes contributions to support additional Foursquare entities and features.
This document discusses several common JavaScript design patterns including Singleton, Factory, Module, Decorator, Command, and Observer patterns. It provides descriptions and code examples for each pattern. The Singleton pattern ensures a class only has one instance and provides a global access point. Factory patterns are used for object creation. The Module pattern provides private and public encapsulation for classes. The Decorator pattern attaches additional responsibilities to objects dynamically. The Command pattern encapsulates requests as objects, and the Observer pattern allows objects to watch other objects for changes.
The document discusses different approaches to object-oriented programming in JavaScript, including classical and prototypal inheritance, constructor functions, and the prototype property. It explains how prototypal inheritance works by linking objects together through their internal prototype properties. Constructor functions and the new operator allow simulating classical inheritance by establishing prototype links. Various design patterns are also covered, such as public/privileged methods, singletons, modules, and parasitic inheritance.
Elegant Solutions For Everyday Python Problems - Nina ZakharenkoNina Zakharenko
The document discusses elegant Python code through the use of several Python concepts and techniques including magic methods, iterators, context managers, partial functions, and decorators. Magic methods allow objects to behave like built-in types through methods like __add__ and __iter__. Context managers provide a way to cleanly handle setup and teardown tasks using the with statement. Partial functions and decorators allow modifying and extending existing functions. Overall the document presents many examples of how to write clean, elegant Python code through leveraging language features.
The document provides an overview of Ruby on Rails and its key components. It discusses how Rails is made up of several gems including Rails, ActiveSupport, ActionPack, ActiveRecord, ActiveResource and ActionMailer. It summarizes the purpose and functionality of each gem. For example, it states that ActiveRecord connects classes to database tables for persistence, while ActionPack handles routing, controllers and views.
1. The document discusses JavaScript concepts like scope, closures, context, and object-oriented programming techniques like constructors, methods, and inheritance.
2. It provides examples of how to create public and private methods, and "privileged" methods that have access to private values and methods.
3. The document shows how to dynamically generate classes at runtime based on properties passed to a constructor using these JavaScript concepts.
Letusgo 2019 Summer - StringInterpolation and SwiftUI정민 안
The document discusses string interpolation in Swift and ways to create rich strings. It introduces string interpolation which allows placeholders in string literals to be replaced with variable values. It then describes extending string interpolation to support custom styles and creating attributed strings. Finally, it discusses using SwiftUI and function builders to build rich strings in a more readable way.
Python's "batteries included" philosophy means that it comes with an astonishing amount of great stuff. On top of that, there's a vibrant world of third-party libraries that help make Python even more wonderful. We'll go on a breezy, example-filled tour through some of my favorites, from treasures in the standard library to great third-party packages that I don't think I could live without, and we'll touch on some of the fuzzier aspects of the Python culture that make it such a joy to be part of.
This document provides a summary of an introduction to the Clojure programming language. It discusses what Clojure is, its timeline and adoption, functional programming concepts, concurrency features using Software Transactional Memory, the Lisp ideology it is based on including homoiconicity and its macro system. It also provides an overview of getting started with Clojure including using the REPL, basic syntax like symbols and keywords, data types, sequences, functions, and Java interoperability. Resources for learning more about Clojure are also listed.
The document discusses object oriented JavaScript. It covers JavaScript types and constructors, creating custom types, using prototypes for inheritance and instance members. It also discusses namespaces, visibility, and polymorphism in JavaScript. Useful design patterns like factories, singletons, and modules are presented. The presentation provides examples and explanations of these core JavaScript concepts.
This document discusses interoperability between Swift and Objective-C. It covers topics like initializing and interacting with Objective-C APIs from Swift, bridging optionals, nullability, lightweight generics, extensions, closures and blocks, object comparison, hashing, selectors, key paths, and more. It also discusses adopting Cocoa design patterns like delegation, lazy initialization, error handling, and key-value observing when using Swift with Cocoa.
This document provides a summary of an introductory presentation on advanced JavaScript concepts including closures, prototypes, inheritance, and more. The presentation covers object literals and arrays, functions as objects, constructors and the this keyword, prototypes and the prototype chain, classical and prototypal inheritance, scope, and closures. Examples are provided to demonstrate each concept.
This document provides an overview of ES6 features and how to set them up for use in Ruby on Rails applications. It describes key ES6 features such as let and const block scoping, template strings, destructuring assignment, default and rest parameters, loops and generators, enhanced object literals, Maps and Sets, arrow functions, modules, and classes. It then provides instructions for using the sprockets-es6 gem to transpile ES6 code to ES5 for use in Rails, as well as using Node.js and Gulp as an alternative approach.
This document contains Swift code for testing a HTTP request to an API using the Alamofire and Mockingjay libraries. It defines a test spec class with a describe block for "hoge" and a context block for "fuga". Within the "fuga" context, a beforeEach stub is set up to mock API responses from the "hogefugapiyo.com" domain. The single "piyo" test makes a request, asserts the response is not nil, and prints the results.
Nick Sieger JRuby Concurrency EMRubyConf 2011Nick Sieger
This document discusses concurrency in JRuby and presents several approaches for managing concurrent operations, including Java's java.util.concurrent utilities, Jetlang fibers and channels, and the Akka actor framework. It notes some challenges with using green threads in JRuby due to shared mutable state and provides examples demonstrating thread safety issues and solutions using these other concurrency models.
Big Data Day LA 2015 - Mongoose v/s Waterline: Battle of the ORM by Tim Fulme...Data Con LA
Mongo is swiftly becoming the default, general purpose database du jour. In green field Node.JS systems, Mongo is almost the default persistence mechanism. At the same time, going completely schema-less raises it's own issues.
Enter the NoSQL ORM solution. By encoding schema information in easily changeable JavaScript definitions, Node.JS systems can get the benefits of both worlds. High velocity change throughput, with just enough guardrails to keep things on the tracks.
Mongoose has traditionally been the go-to ORM package, providing lightweight schema definitions on top of Mongo. Waterline has recently come out of the Sails.JS project with some interesting innovations. In this presentation we compare and contrast the two packages through a few typical ORM use cases.
Understanding Object Oriented Javascript - Coffee@DBG JuneDeepu S Nath
You all might have downloaded and edited a lot of javascript. Other than merely changing syntax have you really understood its working or how the code was organised ?
Have you ever thought of how the object oriented way of writing Javascript has been influencing the front end development?
From a language that had helped developers write small validations and similar stuff, today, the object oriented javascript and its frameworks power the world becoming one of the most prominent language of all times.
Aplicações assíncronas no Android com Coroutines & JetpackNelson Glauber Leal
The document discusses asynchronous applications in Android using Coroutines & Jetpack. It introduces coroutines as lightweight threads that make asynchronous programming easier by replacing callbacks with suspending functions. It covers key coroutine concepts like Job, Context, Scope and Dispatcher. It also discusses how coroutines can be used with Lifecycle, ViewModel and WorkManager components in Jetpack to build asynchronous Android applications.
Using Node and Grunt to create an awesome workflowVernon Kesner
At Ally, we used Node.js along with Grunt, Yo and Bower to develop a custom developer toolset for Ally's front-end development teams. The toolset had to be crafted in a way that allowed us to take a forward approach while still supporting the use of some legacy code and not-so legacy code. In the end, we created a toolset that separated new and on-going development tasks, gave living documentation and usage examples, and also allowed us to focus on maintainable and testable code. In this talk, you will get an overview about problems we tackled as well as solutions we found and approaches to creating a more maintainable codebase.
Design Systems are Coming... Are you Ready?Vernon Kesner
Responsive Web Design has flipped the workflow of multi-discipline organizations on its head. Waterfall methodologies no longer work due to new points of collaboration needed between design and development. These intersection points leave many asking, "What does a wireframe look like?" or "What happened to comps?" This talk will look at how building pattern libraries can also help to build better teams.
This document discusses several common JavaScript design patterns including Singleton, Factory, Module, Decorator, Command, and Observer patterns. It provides descriptions and code examples for each pattern. The Singleton pattern ensures a class only has one instance and provides a global access point. Factory patterns are used for object creation. The Module pattern provides private and public encapsulation for classes. The Decorator pattern attaches additional responsibilities to objects dynamically. The Command pattern encapsulates requests as objects, and the Observer pattern allows objects to watch other objects for changes.
The document discusses different approaches to object-oriented programming in JavaScript, including classical and prototypal inheritance, constructor functions, and the prototype property. It explains how prototypal inheritance works by linking objects together through their internal prototype properties. Constructor functions and the new operator allow simulating classical inheritance by establishing prototype links. Various design patterns are also covered, such as public/privileged methods, singletons, modules, and parasitic inheritance.
Elegant Solutions For Everyday Python Problems - Nina ZakharenkoNina Zakharenko
The document discusses elegant Python code through the use of several Python concepts and techniques including magic methods, iterators, context managers, partial functions, and decorators. Magic methods allow objects to behave like built-in types through methods like __add__ and __iter__. Context managers provide a way to cleanly handle setup and teardown tasks using the with statement. Partial functions and decorators allow modifying and extending existing functions. Overall the document presents many examples of how to write clean, elegant Python code through leveraging language features.
The document provides an overview of Ruby on Rails and its key components. It discusses how Rails is made up of several gems including Rails, ActiveSupport, ActionPack, ActiveRecord, ActiveResource and ActionMailer. It summarizes the purpose and functionality of each gem. For example, it states that ActiveRecord connects classes to database tables for persistence, while ActionPack handles routing, controllers and views.
1. The document discusses JavaScript concepts like scope, closures, context, and object-oriented programming techniques like constructors, methods, and inheritance.
2. It provides examples of how to create public and private methods, and "privileged" methods that have access to private values and methods.
3. The document shows how to dynamically generate classes at runtime based on properties passed to a constructor using these JavaScript concepts.
Letusgo 2019 Summer - StringInterpolation and SwiftUI정민 안
The document discusses string interpolation in Swift and ways to create rich strings. It introduces string interpolation which allows placeholders in string literals to be replaced with variable values. It then describes extending string interpolation to support custom styles and creating attributed strings. Finally, it discusses using SwiftUI and function builders to build rich strings in a more readable way.
Python's "batteries included" philosophy means that it comes with an astonishing amount of great stuff. On top of that, there's a vibrant world of third-party libraries that help make Python even more wonderful. We'll go on a breezy, example-filled tour through some of my favorites, from treasures in the standard library to great third-party packages that I don't think I could live without, and we'll touch on some of the fuzzier aspects of the Python culture that make it such a joy to be part of.
This document provides a summary of an introduction to the Clojure programming language. It discusses what Clojure is, its timeline and adoption, functional programming concepts, concurrency features using Software Transactional Memory, the Lisp ideology it is based on including homoiconicity and its macro system. It also provides an overview of getting started with Clojure including using the REPL, basic syntax like symbols and keywords, data types, sequences, functions, and Java interoperability. Resources for learning more about Clojure are also listed.
The document discusses object oriented JavaScript. It covers JavaScript types and constructors, creating custom types, using prototypes for inheritance and instance members. It also discusses namespaces, visibility, and polymorphism in JavaScript. Useful design patterns like factories, singletons, and modules are presented. The presentation provides examples and explanations of these core JavaScript concepts.
This document discusses interoperability between Swift and Objective-C. It covers topics like initializing and interacting with Objective-C APIs from Swift, bridging optionals, nullability, lightweight generics, extensions, closures and blocks, object comparison, hashing, selectors, key paths, and more. It also discusses adopting Cocoa design patterns like delegation, lazy initialization, error handling, and key-value observing when using Swift with Cocoa.
This document provides a summary of an introductory presentation on advanced JavaScript concepts including closures, prototypes, inheritance, and more. The presentation covers object literals and arrays, functions as objects, constructors and the this keyword, prototypes and the prototype chain, classical and prototypal inheritance, scope, and closures. Examples are provided to demonstrate each concept.
This document provides an overview of ES6 features and how to set them up for use in Ruby on Rails applications. It describes key ES6 features such as let and const block scoping, template strings, destructuring assignment, default and rest parameters, loops and generators, enhanced object literals, Maps and Sets, arrow functions, modules, and classes. It then provides instructions for using the sprockets-es6 gem to transpile ES6 code to ES5 for use in Rails, as well as using Node.js and Gulp as an alternative approach.
This document contains Swift code for testing a HTTP request to an API using the Alamofire and Mockingjay libraries. It defines a test spec class with a describe block for "hoge" and a context block for "fuga". Within the "fuga" context, a beforeEach stub is set up to mock API responses from the "hogefugapiyo.com" domain. The single "piyo" test makes a request, asserts the response is not nil, and prints the results.
Nick Sieger JRuby Concurrency EMRubyConf 2011Nick Sieger
This document discusses concurrency in JRuby and presents several approaches for managing concurrent operations, including Java's java.util.concurrent utilities, Jetlang fibers and channels, and the Akka actor framework. It notes some challenges with using green threads in JRuby due to shared mutable state and provides examples demonstrating thread safety issues and solutions using these other concurrency models.
Big Data Day LA 2015 - Mongoose v/s Waterline: Battle of the ORM by Tim Fulme...Data Con LA
Mongo is swiftly becoming the default, general purpose database du jour. In green field Node.JS systems, Mongo is almost the default persistence mechanism. At the same time, going completely schema-less raises it's own issues.
Enter the NoSQL ORM solution. By encoding schema information in easily changeable JavaScript definitions, Node.JS systems can get the benefits of both worlds. High velocity change throughput, with just enough guardrails to keep things on the tracks.
Mongoose has traditionally been the go-to ORM package, providing lightweight schema definitions on top of Mongo. Waterline has recently come out of the Sails.JS project with some interesting innovations. In this presentation we compare and contrast the two packages through a few typical ORM use cases.
Understanding Object Oriented Javascript - Coffee@DBG JuneDeepu S Nath
You all might have downloaded and edited a lot of javascript. Other than merely changing syntax have you really understood its working or how the code was organised ?
Have you ever thought of how the object oriented way of writing Javascript has been influencing the front end development?
From a language that had helped developers write small validations and similar stuff, today, the object oriented javascript and its frameworks power the world becoming one of the most prominent language of all times.
Aplicações assíncronas no Android com Coroutines & JetpackNelson Glauber Leal
The document discusses asynchronous applications in Android using Coroutines & Jetpack. It introduces coroutines as lightweight threads that make asynchronous programming easier by replacing callbacks with suspending functions. It covers key coroutine concepts like Job, Context, Scope and Dispatcher. It also discusses how coroutines can be used with Lifecycle, ViewModel and WorkManager components in Jetpack to build asynchronous Android applications.
Using Node and Grunt to create an awesome workflowVernon Kesner
At Ally, we used Node.js along with Grunt, Yo and Bower to develop a custom developer toolset for Ally's front-end development teams. The toolset had to be crafted in a way that allowed us to take a forward approach while still supporting the use of some legacy code and not-so legacy code. In the end, we created a toolset that separated new and on-going development tasks, gave living documentation and usage examples, and also allowed us to focus on maintainable and testable code. In this talk, you will get an overview about problems we tackled as well as solutions we found and approaches to creating a more maintainable codebase.
Design Systems are Coming... Are you Ready?Vernon Kesner
Responsive Web Design has flipped the workflow of multi-discipline organizations on its head. Waterfall methodologies no longer work due to new points of collaboration needed between design and development. These intersection points leave many asking, "What does a wireframe look like?" or "What happened to comps?" This talk will look at how building pattern libraries can also help to build better teams.
This talk was given at BlendConf in September 2013. The talk takes a moment to examine some current problems that we face in front-end development. Then, it goes on to explore a couple modular patterns and principles (Single Responsibility Principle, Separation of Concerns, IIFE, Module Pattern, Revealing Module Pattern). We then moved in to modular development approaches we can take today using AMD and one of the implementations of this spec, RequireJS. At the end of the talk, I took a few minutes to talk about Harmony Modules proposed for ES6 and what they look like today.
The Node.js movement has transformed the landscape of UI development. In this session we'll look at how Node.js can be leveraged on multiple layers of the web application development lifecycle. Attendees will learn how incorporating Node.js into your front-end build process can optimize code, allow you to use use new and upcoming JavaScript features in your code today, and to improve your asset delivery pipeline. This session will also cover how Node is changing the template rendering landscape, allowing developers to write "isomorphic" code that runs on the client and server. Lastly we'll look into using Node to achieve developer zen by keeping the codebase clean and limiting the risk of changes to the code causing unknown errors.
http://inarocket.com
Learn BEM fundamentals as fast as possible. What is BEM (Block, element, modifier), BEM syntax, how it works with a real example, etc.
The document discusses how personalization and dynamic content are becoming increasingly important on websites. It notes that 52% of marketers see content personalization as critical and 75% of consumers like it when brands personalize their content. However, personalization can create issues for search engine optimization as dynamic URLs and content are more difficult for search engines to index than static pages. The document provides tips for SEOs to help address these personalization and SEO challenges, such as using static URLs when possible and submitting accurate sitemaps.
Lightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika Aldabaux singapore
How can we take UX and Data Storytelling out of the tech context and use them to change the way government behaves?
Showcasing the truth is the highest goal of data storytelling. Because the design of a chart can affect the interpretation of data in a major way, one must wield visual tools with care and deliberation. Using quantitative facts to evoke an emotional response is best achieved with the combination of UX and data storytelling.
This document summarizes a study of CEO succession events among the largest 100 U.S. corporations between 2005-2015. The study analyzed executives who were passed over for the CEO role ("succession losers") and their subsequent careers. It found that 74% of passed over executives left their companies, with 30% eventually becoming CEOs elsewhere. However, companies led by succession losers saw average stock price declines of 13% over 3 years, compared to gains for companies whose CEO selections remained unchanged. The findings suggest that boards generally identify the most qualified CEO candidates, though differences between internal and external hires complicate comparisons.
The document discusses various techniques for code reuse in JavaScript, including objects, prototypes, functions, closures, and pseudoclassical inheritance. It explains that in JavaScript, objects provide the basis for code reuse since everything is an object, including functions. Prototypes allow objects to inherit properties from other objects. Functions can be reused through closures that close over variables from outer scopes. Pseudoclassical inheritance involves defining behaviors on constructor function prototypes to enable object inheritance.
This document discusses JavaScript inheritance using prototypes. It explains that objects inherit from other objects through their internal __proto__ property. Constructors set an object's __proto__ to reference the constructor's prototype. Methods can be added to the prototype and all objects will inherit those methods. The document also covers how to implement inheritance between constructors like Employee inheriting from Person without calling the parent constructor.
JavaScript has some stunning features like Closures, Prototype etc. which can help to improve the readability and maintainability of the code. However, it is not easy for inexperienced developer to consume and apply those features in day to day coding. The purpose of the presentation ‘Advanced JavaScript’ is to help a reader easily understand the concept and implementation of some advanced JavaScript features.
The document appears to be notes on Backbone.js. It includes summaries of Backbone models, events, views and how to bind events. It demonstrates creating a model with defaults, getting/setting attributes, and binding event handlers. It also shows creating a view with tagName, className and attributes, and logging the generated HTML element.
JavaScript - Programming Languages course yoavrubin
The document provides an overview of JavaScript, covering its dynamic and prototype-based nature, data types including objects and functions, and how functions work including closures and the different ways functions can be called. It discusses key JavaScript concepts like everything being treated as a boolean, prototypal inheritance, and how functions are first-class objects that can be passed around and defined within other functions.
This document provides an agenda and overview for a presentation on JavaScript. It discusses JavaScript's history and popularity, current implementations of JavaScript engines in browsers, and proliferation of JavaScript frameworks. The agenda outlines discussing objects, functions, scope, primitives, common mistakes, inheritance, best practices, modularity, and more. It also includes code examples demonstrating functions, closures, scope, operators, and error handling in JavaScript.
The document summarizes Dmitry Soshnikov's presentation on ECMAScript 6 features at the HelsinkiJS meetup on December 12, 2011. Key features discussed include default function parameters, modules system, quasi-literals for string templates, array comprehensions, maps and weak maps, destructuring assignment, rest operator for function arguments, proxy objects for meta programming, and struct types.
This document provides an introduction to JavaScript concepts such as variables, functions, objects, scopes, and inheritance. Some key points covered include:
- JavaScript variables can be declared with or without the var keyword, and variable types are dynamically determined.
- Functions are objects that can have properties and methods, create closures, and be stored in variables.
- Objects are collections of key-value pairs that use prototypical inheritance rather than classes. Constructors are functions used to create objects.
- Scope is determined lexically and created by functions, allowing private variables through closures. This and prototypes are used to implement inheritance and encapsulation.
- Primitives appear to have methods but actually
This document discusses advanced JavaScript techniques. It covers object-oriented JavaScript concepts like references, function overloading, type checking, scopes, closures, object creation, and inheritance. It also discusses performance improvements like scope management, object caching, and optimizing DOM selection. Finally, it discusses debugging and testing JavaScript code as well as distributing JavaScript applications.
This document provides examples and explanations of JavaScript concepts including objects and arrays, functions and contexts, closures, inheritance, namespaces and scope, module patterns, and dispatching. It demonstrates creating and manipulating objects and arrays, defining functions, using closures, implementing inheritance with prototypes and Object.create, creating namespaces, revealing and constructor module patterns, and a publisher/subscriber dispatching example.
사내 기술 세미나를 다시 시작한다. 나는 그 첫번째 주제로 `Object-oriented Javascript`를 택했다.
예전에 학습했던 [Tuts+ 강의](https://code.tutsplus.com/courses/object-oriented-javascript)를 다시 정리하는 계기가 되었다.
The document provides an overview of object-oriented programming concepts in JavaScript, including:
- JavaScript uses prototype-based inheritance rather than classes, with functions serving as constructors.
- Objects inherit properties and methods from other objects via their prototype chain.
- Custom objects are defined with constructor functions that set properties and methods.
- Inheritance allows creating subclasses that inherit from superclasses. Methods can be overridden.
- Encapsulation involves exposing an object's data through getter/setter methods rather than direct access.
- Superclass members can be accessed in subclasses through calling the superclass constructor or methods.
- Constructor arguments are passed to subclasses by applying the superclass constructor.
In JS: CLASS <=> Constructor FN
new FN() => FN() { this }
FN = CLASS (FN = FN, FN = DATA)
Objects
Prototype / __proto__
Inheritence
Rewriting / Augmenting
built in objects
Starting from Constructor Function and Object.create() as methods for creating objects in Javascript, we analize a couple of way to bootstrap a jQuery Plugin.
The document discusses JavaScript objects and object-oriented programming concepts in JavaScript. It covers how everything in JavaScript except basic types are objects, including functions and arrays. It describes how objects can contain properties and methods, and how properties and methods can be dynamically added at runtime. The document also summarizes object literals, namespaces, arrays, functions, closures, and the this keyword in JavaScript.
The document provides an overview of essential JavaScript concepts for survival including scope, literals and constructors, functions, and testing frameworks. It discusses best practices for declaring variables with var, using constructor functions and prototypes to create objects, encapsulating functions and data with closures, and popular JavaScript testing frameworks like QUnit, JSUnit, and Vows.
The document discusses reasons why JavaScript does not suck, including that it is the most widely used functional programming language, supports lambda functions, objects, metaprogramming, and duck typing. It provides examples of the module pattern for encapsulation and prototype inheritance for object-oriented programming in JavaScript.
Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
Get an inside look at the latest Neo4j innovations that enable relationship-driven intelligence at scale. Learn more about the newest cloud integrations and product enhancements that make Neo4j an essential choice for developers building apps with interconnected data and generative AI.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
Infrastructure Challenges in Scaling RAG with Custom AI modelsZilliz
Building Retrieval-Augmented Generation (RAG) systems with open-source and custom AI models is a complex task. This talk explores the challenges in productionizing RAG systems, including retrieval performance, response synthesis, and evaluation. We’ll discuss how to leverage open-source models like text embeddings, language models, and custom fine-tuned models to enhance RAG performance. Additionally, we’ll cover how BentoML can help orchestrate and scale these AI components efficiently, ensuring seamless deployment and management of RAG systems in the cloud.
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
Essentials of Automations: The Art of Triggers and Actions in FMESafe Software
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfMalak Abu Hammad
Discover how MongoDB Atlas and vector search technology can revolutionize your application's search capabilities. This comprehensive presentation covers:
* What is Vector Search?
* Importance and benefits of vector search
* Practical use cases across various industries
* Step-by-step implementation guide
* Live demos with code snippets
* Enhancing LLM capabilities with vector search
* Best practices and optimization strategies
Perfect for developers, AI enthusiasts, and tech leaders. Learn how to leverage MongoDB Atlas to deliver highly relevant, context-aware search results, transforming your data retrieval process. Stay ahead in tech innovation and maximize the potential of your applications.
#MongoDB #VectorSearch #AI #SemanticSearch #TechInnovation #DataScience #LLM #MachineLearning #SearchTechnology
In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
We will explore the capabilities of AI in understanding XML markup languages and autonomously creating structured XML content. Additionally, we will examine the capacity of AI to enrich plain text with appropriate XML markup. Practical examples and methodological guidelines will be provided to elucidate how AI can be effectively prompted to interpret and generate accurate XML markup.
Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
The discussion will extend to how AI can be used to transform XML content. In particular, the focus will be on the use of AI XPath extension functions in XSLT, Schematron, Schematron Quick Fixes, or for XML content refactoring.
The presentation aims to deliver a comprehensive overview of AI usage in XML development, providing attendees with the necessary knowledge to make informed decisions. Whether you’re at the early stages of adopting AI or considering integrating it in advanced XML development, this presentation will cover all levels of expertise.
By highlighting the potential advantages and challenges of integrating AI with XML development tools and languages, the presentation seeks to inspire thoughtful conversation around the future of XML development. We’ll not only delve into the technical aspects of AI-powered XML development but also discuss practical implications and possible future directions.
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
6. * Some like to say everything is an object
Everything in JavaScript can act like an object
7. Every object in JavaScript links to a prototype object
console.log( “”.__proto__ === String.prototype ); // true!
That, if you’re wondering, is
pronounced “dunder proto"
9. Constructor Functions
• Constructor functions are used
to create new objects.
• Very useful when creating
multiple instances of a
particular object
var list = new Array( 1, 2, 3 );
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
10. var list = new Array( 1, 2, 3 );
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
Where did
that push
method
come from?
11. var list = new Array( 1, 2, 3 );
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
Where did
that push
method
come from?
It’s inherited from Array.prototype!
12. var list = new Array( 1, 2,
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
new Array( 1, 2, 3 )
13. var list = new Array( 1, 2,
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
new Array( 1, 2, 3 )
A function is a block of code that is defined
once but can be invoked any number of times.
14. var list = new Array( 1, 2,
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
new Array( 1, 2, 3 )
Each function has a special this
keyword, the functions invocation context
15. var list = new Array( 1, 2,
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
new Array( 1, 2, 3 )
Functions used to initialize a new
object are called Constructor Functions
16. var list = new Array( 1, 2,
list.push( 4 );
// list === [ 1, 2, 3, 4 ]
new Array( 1, 2, 3 )
All functions - because they are objects - have
a prototype property that is a link to the prototype object
17. So let’s look at an example
function Person ( name ) {
this.name = name;
}
Person.prototype.sayHi = function () {
console.log( “Hi! I’m “, this.name );
}
var vernon = new Person( “Vernon” );
vernon.sayHi(); // Hi! I’m Vernon
18. Constructor Functions
function Person ( name ) {
this.name = name;
}
Person.prototype.sayHi = function () {
console.log( “Hi! I’m “, this.name );
}
var vernon = new Person( “Vernon” );
vernon.sayHi(); // Hi! I’m Vernon
• Common convention is to
uppercase the first character of
the function name of a
constructor function
• The context of this within the
constructor function is the
newly created object
• No return statement required
19. Constructor Functions
function Person ( name ) {
this.name = name;
}
Person.prototype.sayHi = function () {
console.log( “Hi! I’m “, this.name );
}
var vernon = new Person( “Vernon” );
vernon.sayHi(); // Hi! I’m Vernon
• We can add custom
functionality to the prototype
object of our function
• This added functionality is
inherited by each instance of
our constructor we create
• The context of methods added
to the prototype object are the
created instance itself
20. Constructor Functions
function Person ( name ) {
this.name = name;
}
Person.prototype.sayHi = function () {
console.log( “Hi! I’m “, this.name );
}
var vernon = new Person( “Vernon” );
vernon.sayHi(); // Hi! I’m Vernon
• A new object instance is
created by invoking a
constructor function with the
new operator
• Here, we create vernon and
assign is the specified values
as its properties
• So, the value of vernon.name
would be “Vernon”
• We can now create as many
“Person’s” as we want, and
they will all be able to sayHi!
21. Constructor Functions
function Person ( name ) {
this.name = name; // this === window
}
Person.prototype.sayHi = function () {
console.log( “Hi! I’m “, this.name );
}
var vernon = Person( “Vernon” );
vernon.sayHi(); // Hi! I’m Vernon
• Invoking a constructor function
without the new operator has
unintended side effects
• The context of the newly
created object in the case of a
missing new, is window
22. Constructor Functions
function Person ( name ) {
if ( !( this instanceof Person ) ) {
return new Person( name );
}
this.name = name;
}
Person.prototype.sayHi = function () {
console.log( “Hi! I’m “, this.name );
}
var vernon = new Person( “Vernon” );
vernon.sayHi(); // Hi! I’m Vernon
• We can protect ourselves from
these side effects by using the
instanceof operator
• instanceof tests whether an
object has the prototype
property of a constructor in its
prototype chain
• Here, we test the context of
our constructor and return the
proper invocation if needed
23. function Person ( name ) {
this.name = name;
}
Person.prototype.sayHi = function () {
console.log( “Hi! I’m “, this.name );
}
var vernon = new Person( “Vernon” );
vernon.sayHi(); // Hi! I’m Vernon
Person.prototype.sayBye = function () {
console.log( “Bye!” );
}
vernon.sayBye(); // Bye!
24. function Person ( name ) {
this.name = name;
}
Person.prototype.sayHi = function () {
console.log(
}
var vernon = new Person(
vernon.sayHi(); // Hi! I’m Vernon
Person
console
}
vernon
Prototypal Inheritance
25. Prototypal Inheritance
• All inheritance in JavaScript is
through the prototype object
• Object.prototype does not
inherit any properties
• All built-in constructors inherit
from Object.prototype
• Best understood by looking at
an example
http://bit.ly/1MNdeGU
26. Creates a new object with the specified prototype object and properties
Prototypal Inheritance | Object.create()
var obj = {}; // Inherits from Object.prototype
obj.foo = "bar"; // has an own property of foo
var obj2 = Object.create( obj ); // Inherits from obj and Object.prototype
obj2.bar = "baz"; // has an own property of bar
var obj3 = Object.create( obj2 ); // Inherits from obj, obj2 and Object.prototype
obj3.baz = "thud"; // has an own property of baz
console.log( obj3.foo ); // bar
console.log( obj3.bar ); // baz
console.log( obj3.hasOwnProperty( “foo” ) ); // false
27. var obj = {}; // Inherits from Object.prototype
obj.foo = "bar"; // has an own property of foo
var obj2 = Object.create
obj2.bar = "baz"; // has an own property of bar
var obj3 = Object.create
obj3.baz = "thud"; // has an own property of baz
console.log( obj3.foo ); // bar
console.log( obj3.bar ); // baz
console.log( obj3.hasOwnProperty(
This inheritance lookup is
done against the prototype chain
Prototypal Inheritance
28. var obj = {}; // Inherits from Object.prototype
obj.foo = "bar"; // has an own property of foo
var obj2 = Object.create
obj2.bar = "baz"; // has an own property of bar
var obj3 = Object.create
obj3.baz = "thud"; // has an own property of baz
console.log( obj3.foo ); // bar
console.log( obj3.bar ); // baz
console.log( obj3.hasOwnProperty(
We can leverage this to
create scalable objects
Prototypal Inheritance
29. var obj = {}; // Inherits from Object.prototype
obj.foo = "bar"; // has an own property of foo
var obj2 = Object.create
obj2.bar = "baz"; // has an own property of bar
var obj3 = Object.create
obj3.baz = "thud"; // has an own property of baz
console.log( obj3.foo ); // bar
console.log( obj3.bar ); // baz
console.log( obj3.hasOwnProperty(
Let’s look at
another example
Prototypal Inheritance
30. var User = function( details ) {
details = details || {};
this.firstname = details.firstname;
this.lastname = details.lastname;
};
Let’s create a User constructor function
31. var User = function( details ) {
details = details || {};
this.firstname = details.firstname;
this.lastname = details.lastname;
};
User.prototype.logName = function() {
console.log( this.firstname + " " + this.lastname );
};
Now, we’ll add a logName method to the prototype
32. var User = function( details ) {
details = details || {};
this.firstname = details.firstname;
this.lastname = details.lastname;
};
User.prototype.logName = function() {
console.log( this.firstname + " " + this.lastname );
};
var john = new User( { firstname: "John", lastname: "Doe" } );
Finally, let’s create an instance of a User
33. var User = function( details ) { … };
User.prototype.logName = function() { … };
var john = new User( { firstname: "John", lastname: "Doe" } );
var Admin = function( details ) {
this.firstname = details.firstname;
this.lastname = details.lastname;
this.fullaccess = true;
};
Now, let’s add an Admin constructor function
34. var User = function( details ) { … };
User.prototype.logName = function() { … };
var john = new User( { firstname: "John", lastname: "Doe" } );
var Admin = function( details ) {
this.firstname = details.firstname;
this.lastname = details.lastname;
this.fullaccess = true;
};
Admin.prototype = new User();
Admin.prototype.constructor = Admin;
We can inherit functionality from our User function
35. var User = function( details ) { … };
User.prototype.logName = function() { … };
var john = new User( { firstname: "John", lastname: "Doe" } );
var Admin = function( details ) {
this.firstname = details.firstname;
this.lastname = details.lastname;
this.fullaccess = true;
};
Admin.prototype = new User();
Admin.prototype.constructor = Admin;
var jane = new Admin( { firstname: "Jane", lastname: "Doe" } );
jane.logName(); // Jane Doe
Our new Admin instance has access to logName
36. Inheritance and
the prototype chain
• ECMAScript 6 introduces a
new set of keywords
implementing “classes” in
JavaScript. It’s important to
note that these classes are still
prototype based.
• Object.create is another
method of inheritance
• Do not extend native
prototypes unless you are back
porting newer features of
JavaScript to older engines
http://bit.ly/1MNdeGU