This document describes an app architecture and data-oriented design using entities and components. A Context manages data and creates Entity objects which are bags of Component objects. Components are just value types that store data. Groups are subsets of Entities that can be observed. The app imports JSON data into Components and Entities. Entities can be detached to modify on background threads before syncing changes. This allows building reactive UIs that update based on Entity and Component changes.
beyond tellerrand: Mobile Apps with JavaScript – There's More Than WebHeiko Behrens
abstract from http://2011.beyondtellerrand.com
Modern web technologies and responsive design aim at a platform independent code base while promising first-class experience on any mobile device. Even though purely web-based approaches can achieve stunning results, they (still) cannot compete with their native counterpart regarding platform features and integration.
In this talk, I will show you how we can use JavaScript to produce mobile apps that include features such as native UI, push notifications, sensors, and paid distribution. You can expect lots of live demos when I will compare the strengths and weaknesses of various frameworks.
Mozilla が力を入れているゲームに関する活動をテクノロジの面からまとめています。各種 API、特にWeb Workers、Typed Arrayと asm.js、WebAssembly のような JavaScript の高速化手法について概観します。
This slide describes Mozilla's Web Game initiative from technological perspective. We can overview technologies for Web Game: Web Workers, Typed Array, asm.js and WebAssembly. Please refer Mozilla Developer Network (MDN) for each technologies' details.
beyond tellerrand: Mobile Apps with JavaScript – There's More Than WebHeiko Behrens
abstract from http://2011.beyondtellerrand.com
Modern web technologies and responsive design aim at a platform independent code base while promising first-class experience on any mobile device. Even though purely web-based approaches can achieve stunning results, they (still) cannot compete with their native counterpart regarding platform features and integration.
In this talk, I will show you how we can use JavaScript to produce mobile apps that include features such as native UI, push notifications, sensors, and paid distribution. You can expect lots of live demos when I will compare the strengths and weaknesses of various frameworks.
Mozilla が力を入れているゲームに関する活動をテクノロジの面からまとめています。各種 API、特にWeb Workers、Typed Arrayと asm.js、WebAssembly のような JavaScript の高速化手法について概観します。
This slide describes Mozilla's Web Game initiative from technological perspective. We can overview technologies for Web Game: Web Workers, Typed Array, asm.js and WebAssembly. Please refer Mozilla Developer Network (MDN) for each technologies' details.
An introduction to functional programming with goEleanor McHugh
A crash course in functional programming concepts using Go. Heavy on code, light on theory.
You can find the examples at https://github.com/feyeleanor/intro_to_fp_in_go
Martin Fowler's Refactoring Techniques Quick ReferenceSeung-Bum Lee
Martin Fowler's Refactoring Techniques Summary. This includes categorization and simple descriptions as well as some sample code and class diagram for better understanding
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1TpXAZV.
Scalaz-Stream (soon to be called "FS2" or "Functional Streams for Scala") is a library that lets us write compositional, modular, safe, and efficient asynchronous I/O using an expressive purely functional API. Runar Bjarnason presents how to get started with the library, shows some examples, and how we can combine functional streams into large distributed systems. Filmed at qconlondon.com.
Runar Bjarnason is software engineer in Boston, the author of the book Functional Programming in Scala, and an occasional speaker on topics in functional programming.
An introduction to functional programming with goEleanor McHugh
A crash course in functional programming concepts using Go. Heavy on code, light on theory.
You can find the examples at https://github.com/feyeleanor/intro_to_fp_in_go
Martin Fowler's Refactoring Techniques Quick ReferenceSeung-Bum Lee
Martin Fowler's Refactoring Techniques Summary. This includes categorization and simple descriptions as well as some sample code and class diagram for better understanding
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1TpXAZV.
Scalaz-Stream (soon to be called "FS2" or "Functional Streams for Scala") is a library that lets us write compositional, modular, safe, and efficient asynchronous I/O using an expressive purely functional API. Runar Bjarnason presents how to get started with the library, shows some examples, and how we can combine functional streams into large distributed systems. Filmed at qconlondon.com.
Runar Bjarnason is software engineer in Boston, the author of the book Functional Programming in Scala, and an occasional speaker on topics in functional programming.
Improving Correctness with Types Kats ConfIain Hull
A talk I gave at Functional Kats in September 2015
http://workday.github.io/scala/2015/03/17/scala-days-improving-correctness-with-types/
This talk is aimed at Scala developers with a background in object oriented programming who want to learn new ways to use types to improve the correctness of their code. It introduces the topic in a practical fashion, concentrating on the “easy wins” developers can apply to their code today.
http://functionalkats.com/#nav-speakers
Я расскажу о нестандартных особенностях языка для реальных проектов. Речь пойдет о том, зачем усложнять себе жизнь и какие преимущества это может дать.
- Protocol-Oriented Programming и его дилеммы
- Когда и зачем использовать обобщения и вложенные типы
- Настоящее и будущее Swift
Александр Зимин (Alexander Zimin) — Магия SwiftCocoaHeads
Александр говорил о нестандартных особенностях языка для реальных проектов. О том, зачем усложнять себе жизнь и какие преимущества это может дать.
- Protocol-Oriented Programming и его дилеммы
- Когда и зачем использовать обобщения и вложенные типы
- Настоящее и будущее Swift
Improving Correctness With Type - Goto Con BerlinIain Hull
A talk I gave at Goto Con Berlin in December 2015
http://workday.github.io/scala/2015/12/03
This talk is aimed at Scala developers with a background in object oriented programming who want to learn new ways to use types to improve the correctness of their code. It introduces the topic in a practical fashion, concentrating on the “easy wins” developers can apply to their code today.
While Google is adding Kotlin as an official Android language, we're also expanding our research on this language. It’s developed by JetBrains, and the fact that these are the people behind a suite of IDEs, such as IntelliJ and ReSharper, really shines through in Kotlin. It’s pragmatic and concise and makes coding a satisfying and efficient experience.
Although Kotlin compiles to both JavaScript and soon machine code, I’ll focus on its prime environment, the JVM.
Please see my presentation to learn more!
Kotlin for Android Developers - Victor Kropp - Codemotion Rome 2018Codemotion
Kotlin is a programming language developed by JetBrains that targets multiple platforms including the JVM, JavaScript, and native binaries. A year ago it has been adopted as an officially supported language for Android development. Kotlin offers clean and concise syntax, interoperability, both object-oriented and functional code constructs, and a lot of other cool features with little or no overhead. Let's find out together why developers love this language and how it helps them to be productive and have fun!
Design for succcess with react and storybook.jsChris Saylor
Too often developers are not involved with front end design descussions and end up struggling to get a sketch design to fit into a website. Many of these tools do not offer good ways of communicating animations or different states of the various components and in the end, there still has to be a translation into something that is functional.
This talk aims to change that. We will be looking at Storybook as a tool that facilitates developers and designers working hand-in-hand to codify designs in React components. We will also cover some strategies of React component building that enabled taking advantage of tools like Storybook.
Max Koretskyi "Why are Angular and React so fast?"Fwdays
Very few developers have the need to write super optimized code. In application development, we tend to favor readability over optimization. But that’s not the case with frameworks. Developers who use frameworks expect them to run as fast as possible. In fact, speed is often a defining characteristic when choosing a framework. There are techniques that make code run faster. You’ve probably heard about linked lists, monomorphism, and bitmasks, right? Maybe you've even used some. Well, you can find all these and a bunch of other interesting approaches in the sources of most popular JS frameworks.
Over the past year, I’ve seen a lot while reverse-engineering Angular and React. In this talk, I want to share my findings with you. Some of you may end up applying them at work. And others, who knows, may even end up writing the next big framework.
Similar to UIKonf App & Data Driven Design @swift.berlin (20)
Entity Component System - for App developersMaxim Zaks
Entity Component System is a software development pattern which has its roots in game development. The first use of this pattern dates to 1998. Even though it is almost 20 years old, the pattern is not widely known by non game programmers. I implemented two iOS Apps based on the pattern and would like to share my experiences and compare it to a more widely known patterns like MVC, MVVM, Rx and ReSwift.
Entity system architecture with Unity @Unite Europe 2015 Maxim Zaks
Unity incorporates the component based architecture in a seamless manner. However for some games a more data driven approach (entity system architecture) fits better. We had very good experience using entity system architecture for simulation and even match three games. Therefore when we switched our development to Unity, we created a small library and a couple of Unity editor extensions to make Unity work seamlessly with entity system architecture. We called it Entitas-CSharp. The code is open source and available on github. In this talk we would like to show why entity system architecture fits us better and how you can use Entitas-CSharp in your own Unity project.
This presentation was held at CocoaHeads Berlin.
I am explaining the concept of promise with help of OMPromise Library written in ObjC. In the end I present a non complete Swift implementation of Promises concept that I hacked together in couple of hours.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
6. Organizer
...
{
"name": "Maxim Zaks",
"twitter": "@iceX33",
"bio": "Software developer with a history in IDE development,
Web development and even Enterprise Java development
(He was young and under bad influence).
Nowadays working as a game developer (preferably iOS).
Regular visitor and occasional speaker at conferences.",
"photo": "http://www.uikonf.com/static/images/maxim-zaks.png",
"organizer": true
},
...
7. Speaker
...
{
"name": "Graham Lee",
"twitter": "@iwasleeg",
"bio": "Graham Lee works at Facebook, where he helps people make better tests
so they can help people make better software.
In the past he worked with some other people,
and has written books and blogs so he can work
with people he hasn't met too. His blog is at sicpers.info.",
"photo": "http://www.uikonf.com/static/images/Graham-Lee.png"
},
...
10. Import Data from JSON Array
for item in jsonArray {
let entity = context.createEntity()
for pair in (item as! NSDictionary) {
let (key,value) = (pair.key as! String,
pair.value as! JsonValue)
let component = converters[key]!(value)
entity.set(component)
}
}
11. What is a context?
It's a managing data structure
12. public class Context {
public func createEntity() -> Entity
public func destroyEntity(entity : Entity)
public func entityGroup(matcher : Matcher) -> Group
}
14. Entity
public class Entity {
public func set(c:Component, overwrite:Bool = false)
public func get<C:Component>(ct:C.Type) -> C?
public func has<C:Component>(ct:C.Type) -> Bool
public func remove<C:Component>(ct:C.Type)
}
20. Import Data from JSON Array
for item in jsonArray {
let entity = context.createEntity()
for pair in (item as! NSDictionary) {
let (key,value) = (pair.key as! String,
pair.value as! JsonValue)
let component = converters[key]!(value)
entity.set(component)
}
}
26. Entity
public class Group : SequenceType {
public var count : Int
public var sortedEntities: [Entity]
public func addObserver(observer : GroupObserver)
public func removeObserver(observer : GroupObserver)
}
39. func setPhoto() {
let photoComponent = entity!.get(PhotoComponent)!
imageView.image = photoComponent.image
if !photoComponent.loaded {
...
}
}
40. var detachedPerson = entity!.detach
cancelLoadingPhoto =
dispatch_after_cancellable(
0.5, dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0))
{
if let data = NSData(contentsOfURL: photoComponent.url),
let image = UIImage(data: data)
{
let photoComponent = detachedPerson.get(PhotoComponent)!
detachedPerson.set(
PhotoComponent(url: photoComponent.url,
image:image, loaded:true),
overwrite: true
)
detachedPerson.sync()
}
}
41. What's a detached Entity?
It's an Entity implemented as a struct
with a sync method
42. var detachedPerson = entity!.detach
cancelLoadingPhoto =
dispatch_after_cancellable(
0.5, dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0))
{
if let data = NSData(contentsOfURL: photoComponent.url),
let image = UIImage(data: data)
{
let photoComponent = detachedPerson.get(PhotoComponent)!
detachedPerson.set(
PhotoComponent(url: photoComponent.url,
image:image, loaded:true),
overwrite: true
)
detachedPerson.sync()
}
}
43. Recap
—Context is a managing Data Structure
—Entity is a bag of components
—Components are just value types
—Groups are subsets on the components
—You can observe groups -> KVO like behavior
—Use detached entity if you want to go on another
queue
45. Links
—UIKonf App on Github
—Blog: Think different about Data Model
—Blog: What is an entity framework
—Book: Data oriented Design (C++ heavy)
—Talk: Data-Oriented Design and C++ (hardcore)