Cocoapods is an Objective-C library dependency manager that allows developers to specify dependencies and their versions in a Podfile. It supports private pods through custom spec repositories that can host podspecs for any code, allowing pods to be installed from git repositories, URLs, or local paths. Using many small, decoupled dependencies promotes modular code while avoiding overly broad dependencies. Developers should carefully consider potential dependencies based on metrics like commits, issues, and code quality.
Java 7 was released in July 2011 with improvements to performance, concurrency, and memory management. Plans for Java 8 include modularity, lambda expressions, and date/time APIs. The Java Community Process is also being improved to increase transparency, participation, and agility through JSR 348. Overall, the Java ecosystem continues to grow with new languages on the JVM and an active community.
This document introduces Ruby as a programming language and testing tool. It provides an overview of Ruby basics like arrays, hashes, blocks, and classes. It also discusses how to install Ruby, the Ruby culture which emphasizes readability and flexibility, and testing tools like Cucumber and Capybara that enable behavior-driven development in Ruby. Examples are given of how to write Cucumber features and steps to test a pets application.
Zipkin is a distributed tracing system that tracks requests across services. Recent updates include a new Zipkin Lens UI, smaller data and header formats, additional instrumentation libraries, and support for additional transports. Future work may include further developing the messaging abstraction, expanding feature parity across libraries, and improving the user experience through the UI.
The document discusses various Kubernetes concepts including pods, deployments, services, ingress, labels, health checks, config maps, secrets, volumes, autoscaling, resource quotas, namespaces, Helm, and the Kubernetes Dashboard. Kubernetes is a container orchestration tool that manages container deployment, scaling, and networking. It uses pods to group containers, deployments to manage pods, and services for exposing applications.
Things you should know about Node.js. An open-source, cross-platform JavaScript runtime environment for developing a diverse variety of tools and applications.
Demo files: https://github.com/bedis-elacheche/node-workshop-12.16
Cocoapods is an Objective-C library dependency manager that allows developers to specify dependencies and their versions in a Podfile. It supports private pods through custom spec repositories that can host podspecs for any code, allowing pods to be installed from git repositories, URLs, or local paths. Using many small, decoupled dependencies promotes modular code while avoiding overly broad dependencies. Developers should carefully consider potential dependencies based on metrics like commits, issues, and code quality.
Java 7 was released in July 2011 with improvements to performance, concurrency, and memory management. Plans for Java 8 include modularity, lambda expressions, and date/time APIs. The Java Community Process is also being improved to increase transparency, participation, and agility through JSR 348. Overall, the Java ecosystem continues to grow with new languages on the JVM and an active community.
This document introduces Ruby as a programming language and testing tool. It provides an overview of Ruby basics like arrays, hashes, blocks, and classes. It also discusses how to install Ruby, the Ruby culture which emphasizes readability and flexibility, and testing tools like Cucumber and Capybara that enable behavior-driven development in Ruby. Examples are given of how to write Cucumber features and steps to test a pets application.
Zipkin is a distributed tracing system that tracks requests across services. Recent updates include a new Zipkin Lens UI, smaller data and header formats, additional instrumentation libraries, and support for additional transports. Future work may include further developing the messaging abstraction, expanding feature parity across libraries, and improving the user experience through the UI.
The document discusses various Kubernetes concepts including pods, deployments, services, ingress, labels, health checks, config maps, secrets, volumes, autoscaling, resource quotas, namespaces, Helm, and the Kubernetes Dashboard. Kubernetes is a container orchestration tool that manages container deployment, scaling, and networking. It uses pods to group containers, deployments to manage pods, and services for exposing applications.
Things you should know about Node.js. An open-source, cross-platform JavaScript runtime environment for developing a diverse variety of tools and applications.
Demo files: https://github.com/bedis-elacheche/node-workshop-12.16
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.
"WTF is Twisted? (or; owl amongst the ponies)" is a talk that introduces the Twisted asynchronous programming framework, how it works, and what uses it.
This document provides an introduction to Linux and shell scripting, outlining what Linux is, who developed it, how to get and install Linux, where it can be used, and an overview of shells and shell scripts. It describes the organization of the tutorial and what makes it different from other resources on the topic. The first chapter introduces basic concepts around Linux and shell scripting.
This document provides an overview of the Clojure programming language. It discusses that Clojure is a hosted language that runs on the JVM, CLR and JavaScript runtime. It is a functional, immutable and concurrent language. Clojure allows easy interoperability with Java libraries and supports parallel processing. As a Lisp dialect, Clojure code has homoiconic properties where code is represented as data. This overview introduces Clojure concepts like atoms, refs, agents and STM for concurrency. It also discusses Clojure development tools and resources for learning Clojure.
The document discusses various techniques for implementing reflection in object-oriented programming languages like Smalltalk. It describes approaches for controlling message passing through minimal objects, anonymous classes, and method substitution. Minimal objects intercept messages using doesNotUnderstand:, while anonymous classes are inserted between instances and their classes to control lookup. Method substitution directly replaces methods to add control. The document analyzes the tradeoffs of different reflective approaches.
The document discusses behavioral reflection and metaprogramming techniques in Smalltalk. It introduces sub-method structures like bytecode, the ByteSurgeon library for bytecode transformation, and Geppetto which enables partial behavioral reflection through hooksets and metaobjects. This allows profiling and caching to be selectively added to applications at runtime without restarting the system. Future work includes improving tool support and integrating with AST representations.
This document discusses using Gradle for building projects in multiple languages. Gradle's domain specific language is based on Groovy, which allows for concise syntax. Gradle supports building Java, C++, Ruby, and other languages through plugins. It can also be used to build documentation and publish artifacts to repositories. Migrating from other build systems like Ant, Maven, and Make to Gradle is also discussed.
Puppet is a configuration management tool that allows systems to be declared and maintained in a desired state. It uses a declarative domain-specific language to describe system configuration. Resources are used to model system components like packages, services, files and users. Modules bundle related manifests, files and templates. A Puppet master stores configurations and agents pull configurations from the master to make necessary changes. After runs, agents report back metrics and logs to provide visibility into infrastructure changes.
Изучаем миллиард состояний программы на уровне профи. Как разработать быстрый...Positive Hack Days
This document discusses dynamic binary instrumentation (DBI) and provides two examples of DBI tools. DBI allows analyzing a program's behavior at runtime by injecting instrumentation code. Two open-source DBI tools are described: WinHeap Explorer detects heap-based bugs with low overhead, while DrLtrace transparently traces malware library calls. DBI provides a powerful method for software security analysis, malware analysis, and reverse engineering. Traditional data structures in DBI can introduce significant overhead, so lightweight approaches are discussed.
This document provides an overview of Subversion (SVN), a version control system. It discusses why developers should use version control, defines what SVN is, and how it works with a centralized repository. Key aspects covered include checking out and updating code, adding/deleting files, resolving conflicts, and committing changes. The document also outlines SVN's repository structure of trunk, branches, and tags. In the end, it provides best practices for using SVN effectively.
Darwino Script and Command Line provides capabilities for customizing Darwino applications through scripting and commands. Darwino Script is an interpreted scripting language similar to JavaScript that can directly call Java classes and is optimized for low resource usage. It can be used by citizen developers for customizations and end user configurations. The Darwino command framework allows executing text commands that are contributed via extensions to perform administration and debugging tasks. A simple CLI and web UI are provided to execute Darwino Scripts and Commands.
This document discusses various low-level exploits, beginning with creating shellcode by extracting opcodes from a compiled C program. It then covers stack-based buffer overflows, including return-to-stack exploits and return-to-libc. Next it discusses heap overflows using the unlink technique, integer overflows, and format string vulnerabilities. The document provides code examples and explanations of the techniques.
This document provides an introduction to Twisted, an event-driven networking engine written in Python. It describes Twisted's key components, including the Reactor event loop, Deferred asynchronous programming abstraction, networking abstractions like Transport and Protocol, and high-level APIs for applications like HTTP, SMTP, FTP and more. It also discusses how to deploy Twisted applications using the twistd utility and provides additional resources for learning more about asynchronous programming and Twisted.
A presentation at Twitter's official developer conference, Chirp, about why we use the Scala programming language and how we build services in it. Provides a tour of a number of libraries and tools, both developed at Twitter and otherwise.
The document discusses working with bytecodes in Smalltalk. It describes reasons for working with bytecodes like generating bytecode, implementing compilers, and analyzing programs. It provides an overview of Squeak bytecodes and examples of generating and decoding bytecodes. Key frameworks discussed for working with bytecodes are IRBuilder for generating bytecode, InstructionStream for parsing bytecode, and ContextPart for interpreting bytecode.
Although we don't use it for the core web application, most other places in Launchpad that have to deal with concurrency issues do it using Twisted. This talk will survey these areas and talk about issues we've found and design patterns we've found helpful.
Quick Introduction to Kotlin Coroutine for Android DevShuhei Shogen
This document introduces Kotlin coroutines, which provide a way to handle parallel processing more easily than traditional threading or callbacks. Coroutines allow suspending execution to avoid blocking threads. They are lightweight threads that efficiently use system resources. The document provides an overview of coroutines and demonstrates how to set them up, launch coroutines, use suspending functions like async/await, and apply coroutines in Android applications using ViewModelScope.
Project Coin introduced several new features to Java 7 including diamond syntax for type inference, multi-catch exception handling, try-with-resources for cleaner resource management, strings in switch statements, and underscores in numeric literals. NIO.2 expanded non-blocking I/O with new file system APIs and WatchService for monitoring directories. Performance was improved through parallel array operations and other concurrency updates. Java 8 will include lambda expressions and new date/time APIs.
This document provides an overview of JRuby, which is a Ruby implementation that runs on the Java Virtual Machine (JVM). It discusses key aspects of JRuby like its compatibility with Ruby, access to Java libraries, integration with Java code, and usage in applications like Rails. Specific topics covered include JRuby fundamentals, dynamic typing, classes and modules, mixins, Java integration features, testing Java code from Ruby, and calling Ruby from Java using JSR-223.
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.
"WTF is Twisted? (or; owl amongst the ponies)" is a talk that introduces the Twisted asynchronous programming framework, how it works, and what uses it.
This document provides an introduction to Linux and shell scripting, outlining what Linux is, who developed it, how to get and install Linux, where it can be used, and an overview of shells and shell scripts. It describes the organization of the tutorial and what makes it different from other resources on the topic. The first chapter introduces basic concepts around Linux and shell scripting.
This document provides an overview of the Clojure programming language. It discusses that Clojure is a hosted language that runs on the JVM, CLR and JavaScript runtime. It is a functional, immutable and concurrent language. Clojure allows easy interoperability with Java libraries and supports parallel processing. As a Lisp dialect, Clojure code has homoiconic properties where code is represented as data. This overview introduces Clojure concepts like atoms, refs, agents and STM for concurrency. It also discusses Clojure development tools and resources for learning Clojure.
The document discusses various techniques for implementing reflection in object-oriented programming languages like Smalltalk. It describes approaches for controlling message passing through minimal objects, anonymous classes, and method substitution. Minimal objects intercept messages using doesNotUnderstand:, while anonymous classes are inserted between instances and their classes to control lookup. Method substitution directly replaces methods to add control. The document analyzes the tradeoffs of different reflective approaches.
The document discusses behavioral reflection and metaprogramming techniques in Smalltalk. It introduces sub-method structures like bytecode, the ByteSurgeon library for bytecode transformation, and Geppetto which enables partial behavioral reflection through hooksets and metaobjects. This allows profiling and caching to be selectively added to applications at runtime without restarting the system. Future work includes improving tool support and integrating with AST representations.
This document discusses using Gradle for building projects in multiple languages. Gradle's domain specific language is based on Groovy, which allows for concise syntax. Gradle supports building Java, C++, Ruby, and other languages through plugins. It can also be used to build documentation and publish artifacts to repositories. Migrating from other build systems like Ant, Maven, and Make to Gradle is also discussed.
Puppet is a configuration management tool that allows systems to be declared and maintained in a desired state. It uses a declarative domain-specific language to describe system configuration. Resources are used to model system components like packages, services, files and users. Modules bundle related manifests, files and templates. A Puppet master stores configurations and agents pull configurations from the master to make necessary changes. After runs, agents report back metrics and logs to provide visibility into infrastructure changes.
Изучаем миллиард состояний программы на уровне профи. Как разработать быстрый...Positive Hack Days
This document discusses dynamic binary instrumentation (DBI) and provides two examples of DBI tools. DBI allows analyzing a program's behavior at runtime by injecting instrumentation code. Two open-source DBI tools are described: WinHeap Explorer detects heap-based bugs with low overhead, while DrLtrace transparently traces malware library calls. DBI provides a powerful method for software security analysis, malware analysis, and reverse engineering. Traditional data structures in DBI can introduce significant overhead, so lightweight approaches are discussed.
This document provides an overview of Subversion (SVN), a version control system. It discusses why developers should use version control, defines what SVN is, and how it works with a centralized repository. Key aspects covered include checking out and updating code, adding/deleting files, resolving conflicts, and committing changes. The document also outlines SVN's repository structure of trunk, branches, and tags. In the end, it provides best practices for using SVN effectively.
Darwino Script and Command Line provides capabilities for customizing Darwino applications through scripting and commands. Darwino Script is an interpreted scripting language similar to JavaScript that can directly call Java classes and is optimized for low resource usage. It can be used by citizen developers for customizations and end user configurations. The Darwino command framework allows executing text commands that are contributed via extensions to perform administration and debugging tasks. A simple CLI and web UI are provided to execute Darwino Scripts and Commands.
This document discusses various low-level exploits, beginning with creating shellcode by extracting opcodes from a compiled C program. It then covers stack-based buffer overflows, including return-to-stack exploits and return-to-libc. Next it discusses heap overflows using the unlink technique, integer overflows, and format string vulnerabilities. The document provides code examples and explanations of the techniques.
This document provides an introduction to Twisted, an event-driven networking engine written in Python. It describes Twisted's key components, including the Reactor event loop, Deferred asynchronous programming abstraction, networking abstractions like Transport and Protocol, and high-level APIs for applications like HTTP, SMTP, FTP and more. It also discusses how to deploy Twisted applications using the twistd utility and provides additional resources for learning more about asynchronous programming and Twisted.
A presentation at Twitter's official developer conference, Chirp, about why we use the Scala programming language and how we build services in it. Provides a tour of a number of libraries and tools, both developed at Twitter and otherwise.
The document discusses working with bytecodes in Smalltalk. It describes reasons for working with bytecodes like generating bytecode, implementing compilers, and analyzing programs. It provides an overview of Squeak bytecodes and examples of generating and decoding bytecodes. Key frameworks discussed for working with bytecodes are IRBuilder for generating bytecode, InstructionStream for parsing bytecode, and ContextPart for interpreting bytecode.
Although we don't use it for the core web application, most other places in Launchpad that have to deal with concurrency issues do it using Twisted. This talk will survey these areas and talk about issues we've found and design patterns we've found helpful.
Quick Introduction to Kotlin Coroutine for Android DevShuhei Shogen
This document introduces Kotlin coroutines, which provide a way to handle parallel processing more easily than traditional threading or callbacks. Coroutines allow suspending execution to avoid blocking threads. They are lightweight threads that efficiently use system resources. The document provides an overview of coroutines and demonstrates how to set them up, launch coroutines, use suspending functions like async/await, and apply coroutines in Android applications using ViewModelScope.
Project Coin introduced several new features to Java 7 including diamond syntax for type inference, multi-catch exception handling, try-with-resources for cleaner resource management, strings in switch statements, and underscores in numeric literals. NIO.2 expanded non-blocking I/O with new file system APIs and WatchService for monitoring directories. Performance was improved through parallel array operations and other concurrency updates. Java 8 will include lambda expressions and new date/time APIs.
This document provides an overview of JRuby, which is a Ruby implementation that runs on the Java Virtual Machine (JVM). It discusses key aspects of JRuby like its compatibility with Ruby, access to Java libraries, integration with Java code, and usage in applications like Rails. Specific topics covered include JRuby fundamentals, dynamic typing, classes and modules, mixins, Java integration features, testing Java code from Ruby, and calling Ruby from Java using JSR-223.
Java Class 6 | Java Class 6 |Threads in Java| Applets | Swing GUI | JDBC | Ac...Sagar Verma
16. Threads in Java
Non-Threaded Applications
Threaded Applications
Process based multitasking Vs Thread based multitasking
Thread API in Java
Creating Threads
States of a Thread
Synchronization for threads; static and non-static synchronized methods; blocks; concept of object and class locks
Coordination between threads - wait, notify and notifyAll methods for inter-thread communication
17. Applets
What are applets?
Need for Applets
Different ways of running an applet program
Applet API hierarchy
Life Cycle of an applet
Even Handlers for applets, mouse events, click events
18. Swing GUI
Introduction to AWT
Introduction to Swing GUI
Advantages of Swing over AWT
Swing API
Swing GUI Components
Event Handlers for Swing
Sample Calculator application using Swing GUI and Swing Event handling
19. JDBC
What is JDBC; introduction
JDBC features
JDBC Drivers
Setting up a database and creating a schema
Writing JDBC code to connect to DB
CRUD Operations with JDBC
Statement types in JDBC
Types of Rowset, ResultSet in JDBC
20. Access Modifiers in Java
What are access modifiers?
Default
Protected
Private
Public
[Hic2011] using hadoop lucene-solr-for-large-scale-search by systexJames Chen
This document discusses using Hadoop/MapReduce with Solr/Lucene for large scale distributed search. It begins with an introduction to the speaker and his experience with Hadoop. The agenda then outlines discussing why search big data, an overview of Lucene, Solr and Zookeeper, distributed searching and indexing with Hadoop, and a case study on web log categorization.
Java-1st.pptx about Java technology before oopsbuvanabala
The document provides an overview of Java programming concepts including:
- What a computer program is and how it is executed by a computer.
- Key differences between Java and other technologies such as its cross-platform capabilities and memory management.
- The basic steps to compile and execute a Java program from the command line.
- Important concepts like case sensitivity, naming conventions, and the main method that is required for all Java programs.
- The different phases a Java program goes through and key components like the JVM, JRE, and JDK.
- Java features like portability, security, and multi-threading capabilities.
- Java's primitive data types and type casting between
2013.02.02 지앤선 테크니컬 세미나 - Xcode를 활용한 디버깅 팁(OSXDEV)JiandSon
This document provides debugging tips for Xcode including using breakpoint actions, exception breakpoints, symbolic breakpoints, and static analysis. It compares ARC and non-ARC debugging and discusses diagnostic tools like memory management and logging. Finally, it introduces DTrace as a dynamic tracing facility for macOS and iOS.
This document provides an overview of common tools used for building, logging, and unit testing Java applications: Maven for build automation, Log4J2 and SLF4J for logging, and JUnit for unit testing. It describes the purpose and basic usage of each tool. For Maven, it covers the standard project layout, dependencies, lifecycle, and POM file. For logging, it explains Log4J2 configuration and best practices. And for testing, it introduces the JUnit framework and common assertions.
This document provides an overview of object-oriented programming concepts in Java including abstraction, encapsulation, inheritance, and polymorphism. It discusses key Java concepts like classes, objects, methods, and access specifiers. It also covers Java fundamentals like variables, data types, operators, control flow statements, comments, and arrays. Additionally, it describes the Java runtime environment, how to set up a Java development environment, compile and run a simple Java program. The document is intended as an introduction to object-oriented programming and the Java programming language.
What is Java Technology (An introduction with comparision of .net coding)Shaharyar khan
A introductory slides for those who want to learn and know some basics of Java.Also for those persons who want to compare coding difference between Java and .net
This document provides an overview of core Java concepts including:
- A brief history of Java's development from 1991 to today.
- Key Java features such as being object-oriented, platform independent, secure, and reliable.
- Object-oriented programming concepts in Java like classes, objects, inheritance, polymorphism.
- Common Java keywords, operators, data types, and variables.
- Additional topics covered include methods, inheritance, interfaces, exceptions, and strings.
Java : Components
Java : Features
Java : Security
Java better than C++
Basic Data Types
Applications : Types
Life Cycle of Java Code
Java Development Kit
Java Example
Mechanism of Applets
Significance of downloading Applets
Used Java Main Packages
The document discusses the fundamentals of object-oriented programming and Java. It covers key concepts like abstraction, encapsulation, inheritance and polymorphism. It also describes the basic structure of a Java program, including classes, objects, methods and variables. It explains how to set up a Java development environment, compile and run a simple Java program.
Experiences from debugging ZFS in production in Illumos and Linux from Delphix. Introduction of the SDB debugger and how it can be used to debug ZFS on Linux.
Swift Install Workshop - OpenStack Conference Spring 2012Joe Arnold
OpenStack Swift is a highly-available distributed object storage
system which supports highly concurrent workloads. Swift is the
backbone behind Cloud Files, Rackspace's storage-as-a-service
offering.
In this workshop, which will be hosted by members of SwiftStack, Inc.,
we'll walk you through deployment and use of OpenStack Swift. We'll
begin by showing you how to install Swift from the ground up.
You'll learn:
- what you should know about Swift's architecture
- how to bootstrap a basic Swift installation
After that, we'll cover how to use Swift, including information on:
- creating accounts and users
- adding, removing, and managing data
- building applications on top of Swift
Bring your laptop (with virutalization extensions enabled in the BIOS)
and we will walk through setting up Swift in a virtual machine. We'll
also build an entire application on top of Swift to illustrate how to
use Swift as a storage service. This is a workshop you won't want to
miss!
This document provides an overview of imperative programming languages (IPL). Some key points:
- IPLs closely resemble the architectural structure of computers and manipulate values and machine states. They use constructs like procedures, functions, variables, and sequential statements.
- Examples of IPLs include FORTRAN, COBOL, Pascal, C/C++, BASIC, and Java. They are based on the von Neumann architecture and instruction set of CPUs.
- IPL characteristics include variables, procedures/function calls, sequential/conditional/iterative statements, and side effects from statement order. Variables abstract memory storage.
The document discusses Java Beans, Applets, JDBC, Networking in Java, JNDI, and some key classes used in these technologies. It provides an overview of concepts like Java Beans components, properties, events, introspection, customization, persistence. It describes the lifecycle and methods of Applets. It outlines the basic steps to use JDBC like loading drivers, establishing connections, executing queries. It discusses connection-oriented and connectionless networking in Java and common network classes like Socket, ServerSocket, URL, URLConnection. It provides a high-level overview of the JNDI architecture.
The document summarizes some of the new features introduced in Java 7. It discusses binary literals, underscores in numeric literals, strings in switch statements, automatic resource management using try-with-resources, multi-catch exceptions, more precise rethrowing of exceptions, diamond operator for generic types, varargs warnings and suppression, Java NIO.2 features for file navigation, directories, symbolic links, and walking file trees. The document provides examples and explanations of how to use these new Java 7 language features.
Neal Ford Emergent Design And Evolutionary ArchitectureThoughtworks
ThoughtWorks Luminary and Conference Presenter Extraordinaire Neal Ford will be presenting:
Emergent Design & Evolutionary Architecture
Most of the software world has realised that Big Design Up Front (BDUF) doesn’t work well in software. But lots of developers struggle with this notion when it applies to architecture and design, surely you can’t start coding, right? You need some level of understanding before you can start work.
This seminar will explore the current thinking about Emergent Design and Evolutionary Architecture, including:
• Proactive approaches with test driven development
• Reactive approaches including both refactoring and composed methods
• Strategies and techniques for allowing design to emerge from projects as they proceed, keeping your code in sync with the problem domain
• Real world examples of these techniques in action
Neal Ford, Software Architect and Meme Wrangler, ThoughtWorks
Neal is an acclaimed international speaker and expert on designing and building of large-scale enterprise applications. Neal has spoken at over 100 conferences worldwide, delivering more than 600 talks. Neal is also the designer and developer of applications, instructional materials, magazine articles, courseware, video/DVD presentations and author and/or editor of 6 books spanning a variety of technologies, including the most recent The Productive Programmer.
The document discusses high-level concurrency and the actor model architecture. It notes several problems with concurrent programming like race conditions and deadlocks. The actor model uses isolated independent objects called actors that communicate asynchronously via message passing, avoiding concurrency issues. Examples shown include parallel processing, monad binding, and Instagram's use of actors.
This document discusses improving table view data sources by implementing the single responsibility principle and using combinators. It outlines problems with traditional approaches where view controllers handle data sources and cells. The author advocates defining base data source classes that provide minimal functionality and combining them to add dynamic behaviors like filtering, reordering and indexing. Implementing this approach removes duplicate code, allows changing behavior through combinators, and makes data sources reusable across views. Examples of combinators that could be implemented are provided.
This document outlines the Model-View-ViewModel (MVVM) pattern and compares it to related patterns like MVC. It defines the key components in MVVM - the model, view, and view model. The view model acts as an adapter between the model and view, containing business logic and handling data binding. Benefits of MVVM include testable view models and a cleaner separation of concerns between the view/controller and underlying data/logic. ReactiveCocoa is mentioned as a framework that can provide the data bindings in MVVM. Core Data is one option for building the model/data layer.
The basics of Reactive Cocoa. The tips and tricks in this presentation will cover almost all the use cases for Reactive Cocoa. Demo here: https://github.com/rob-brown/Demos/tree/master/RACDemo.
UIKit Dynamics is an animation framework in iOS that uses physics-based behaviors like gravity, collisions, attachments and forces to simulate real-world interactions. It includes behaviors for gravity, collisions, attachments, snapping and pushing. While not fully accurate physics, it allows composable animations through combining multiple behaviors. The document provides examples of behaviors and how to compose them, as well as limitations and resources for learning more.
iOS State Preservation and RestorationRobert Brown
Covers iOS app state preservation and restoration with extra emphasis on NSCoding. WWCD 2012 session 208 glosses over some of the fine details of how NSCoding works. Understanding this foundation better helps in understanding state preservation and restoration.
This document discusses various anti-patterns and best practices in coding. It covers topics like avoiding magic numbers, proper use of #define, implicit type conversions, assertions, encapsulation, short and descriptive variable names, dead code, and name spacing. The key messages are to form good habits, optimize code for humans, learn rules well to know when to break them, avoid assumptions without assertions, and use proper encapsulation, short methods and naming.
For the best viewing experience, please download this presentation and view it in Keynote. SlideShare doesn't handle the animations well.
Blocks are a powerful language feature. However, they are underused and under-appreciated in Objective-C, especially compared to Ruby. My intent is to make blocks easy to understand and show many practical uses of blocks.
Core Data is Apple's framework for managing and persisting data in iOS and macOS applications. It provides objects for managing data models (NSManagedObjectModel), object contexts (NSManagedObjectContext), and connections to persistent stores like SQLite (NSPersistentStoreCoordinator, NSPersistentStore). Core Data graphs and saves managed objects, handling all the complexities of object relationships and concurrency. Developers can customize data storage through entities, attributes, relationships in the data model and by choosing XML, SQLite, binary, or in-memory storage formats.
AI 101: An Introduction to the Basics and Impact of Artificial IntelligenceIndexBug
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
Main news related to the CCS TSI 2023 (2023/1695)Jakub Marek
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
Programming Foundation Models with DSPy - Meetup SlidesZilliz
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Webinar: Designing a schema for a Data WarehouseFederico Razzoli
Are you new to data warehouses (DWH)? Do you need to check whether your data warehouse follows the best practices for a good design? In both cases, this webinar is for you.
A data warehouse is a central relational database that contains all measurements about a business or an organisation. This data comes from a variety of heterogeneous data sources, which includes databases of any type that back the applications used by the company, data files exported by some applications, or APIs provided by internal or external services.
But designing a data warehouse correctly is a hard task, which requires gathering information about the business processes that need to be analysed in the first place. These processes must be translated into so-called star schemas, which means, denormalised databases where each table represents a dimension or facts.
We will discuss these topics:
- How to gather information about a business;
- Understanding dictionaries and how to identify business entities;
- Dimensions and facts;
- Setting a table granularity;
- Types of facts;
- Types of dimensions;
- Snowflakes and how to avoid them;
- Expanding existing dimensions and facts.
Generating privacy-protected synthetic data using Secludy and MilvusZilliz
During this demo, the founders of Secludy will demonstrate how their system utilizes Milvus to store and manipulate embeddings for generating privacy-protected synthetic data. Their approach not only maintains the confidentiality of the original data but also enhances the utility and scalability of LLMs under privacy constraints. Attendees, including machine learning engineers, data scientists, and data managers, will witness first-hand how Secludy's integration with Milvus empowers organizations to harness the power of LLMs securely and efficiently.
Ocean lotus Threat actors project by John Sitima 2024 (1).pptxSitimaJohn
Ocean Lotus cyber threat actors represent a sophisticated, persistent, and politically motivated group that poses a significant risk to organizations and individuals in the Southeast Asian region. Their continuous evolution and adaptability underscore the need for robust cybersecurity measures and international cooperation to identify and mitigate the threats posed by such advanced persistent threat groups.
GraphRAG for Life Science to increase LLM accuracyTomaz Bratanic
GraphRAG for life science domain, where you retriever information from biomedical knowledge graphs using LLMs to increase the accuracy and performance of generated answers
OpenID AuthZEN Interop Read Out - AuthorizationDavid Brossard
During Identiverse 2024 and EIC 2024, members of the OpenID AuthZEN WG got together and demoed their authorization endpoints conforming to the AuthZEN API
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdfChart Kalyan
A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
Digital Marketing Trends in 2024 | Guide for Staying AheadWask
https://www.wask.co/ebooks/digital-marketing-trends-in-2024
Feeling lost in the digital marketing whirlwind of 2024? Technology is changing, consumer habits are evolving, and staying ahead of the curve feels like a never-ending pursuit. This e-book is your compass. Dive into actionable insights to handle the complexities of modern marketing. From hyper-personalization to the power of user-generated content, learn how to build long-term relationships with your audience and unlock the secrets to success in the ever-shifting digital landscape.
Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.
Taking AI to the Next Level in Manufacturing.pdfssuserfac0301
Read Taking AI to the Next Level in Manufacturing to gain insights on AI adoption in the manufacturing industry, such as:
1. How quickly AI is being implemented in manufacturing.
2. Which barriers stand in the way of AI adoption.
3. How data quality and governance form the backbone of AI.
4. Organizational processes and structures that may inhibit effective AI adoption.
6. Ideas and approaches to help build your organization's AI strategy.
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
How to Get CNIC Information System with Paksim Ga.pptxdanishmna97
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
3. Blocks
Blocks are a proposed addition to C.
Like a function pointer, except it also stores the context
the block was created in.
Similar to closures, lambdas, and anonymous functions
in other languages.
4. Blocks
Declaration Syntax:
returnType (^blockName) (Arguments)
Blocks may be anonymous.
Definition Syntax:
^ returnType (Arguments) { code; }
The return type and arguments are optional.
GCD provides function pointer variants to the block APIs.
5. Blocks
Blocks can modify local variables outside of their scope
if the variables have the new __block keyword.
Global and static variables can be modified without the
__block keyword.
Blocks automatically retain Objective-C objects.
C objects must be manually retained.
7. What is GCD?
GCD is a lightweight multithreading engine.
Uses a thread pool.
Developers create queues of blocks rather than
threads.
Uses lock-less exclusion rather than mutual exclusion.
Replaces blocking and polling APIs.
8. Why Multithread on a Single
Core?
Keeps the UI responsive.
UI code runs on the main thread.
Everything else runs on a background thread.
Prevents the main thread from blocking or waiting.
10. Global Queues
Four global queues:
Main, Low, Default, and High.
Only the main thread services the main queue.
The three other queues determine the priority of
background tasks.
Enqueuing is thread safe.
12. User Queues Jedi
Level
Developers can create their own queues.
Create a queue for each task, subsystem, or resource.
Queues should use reverse-DNS naming.
Example: edu.byu.cocoaheads.networkqueue
13. User Queues Jedi
Level
All queues must eventually drain to a global queue.
Queues can be organized into arbitrary hierarchies.
Don’t create loops!
15. Dispatch Sources Jedi
Level
Queues can respond to low-level events.
Decouples monitoring and event handling.
Avoids polling for an event.
Example: Polling for a directory change or socket
available.
Dispatch sources can be suspended, resumed, and
cancelled.
16. Semaphores Sith
Level
Semaphores are used to create locks.
Available if you need them.
Usually block the running thread.
The availability of the semaphore can be checked
without blocking (i.e. Test and Set).