«Objective-C Runtime в примерах» — Алексей Сторожев, e-Legion

Hamburg presentation of the Node.js driver building a simple location based app using express.js and mongodb.

The document provides an overview of new features introduced in C# 6.0, including static using, string interpolation, dictionary initializers, auto-property initializers, nameof expression, await in catch/finally blocks, null conditional operator, expression-bodied members, and extension methods used with static using. Code examples are provided to demonstrate the usage of each new feature.

This document discusses using Jasmine to test JavaScript code. It describes Jasmine as a behavior driven development framework for JavaScript testing. It then provides instructions on installing Jasmine, creating spec files to contain test cases, and including source code files. The document uses an example of testing a master-slave checkbox relationship to demonstrate how to set up tests, DOM elements, and code the tests against the actual code implementation.

The document discusses the Apache Commons project, which develops reusable Java components. It notes that Commons components allow for faster and smaller development by avoiding reinventing common functions. The document outlines several active Commons components like Collections, IO, Lang, and Logging, as well as sandbox and dormant components. It emphasizes that 80% of Commons components have no dependencies on each other, promoting flexibility and reuse.

The document discusses async/await in .NET and C#. It is aimed at .NET library developers to help them understand when and how to properly implement async methods. The key topics covered are getting the right mental model for async/await, knowing when not to use async, avoiding allocations, and minimizing suspensions. Examples are provided of manually caching tasks to improve performance compared to unnecessary allocations.

The document provides an overview of the Spock testing framework for Java Virtual Machine (JVM) applications. It describes Spock as a behavior-driven development (BDD) testing tool that can be used for both unit and system tests. Spock tests use a given-when-then structure and various blocks like setup, cleanup, and where to define fixtures, exercise code, and make assertions. It also supports features like parameterized tests, helper methods, and powerful assertions.

This document discusses UIPickerView and NSArray in iOS app development. It includes sections on NSArray classes like NSArray and NSMutableArray, how to initialize and access array objects. It also covers the UIPickerView, UIPickerViewDataSource, and UIPickerViewDelegate protocols. Example projects are described that show how to generate a UIPickerView programmatically or using a XIB file and populate it with array data. Projects also demonstrate handling selection of multiple components and dependent picker views.

The document provides an agenda for a talk on modeling a Rubik's Cube in JavaScript. It begins with an introduction to scripting languages and ECMAScript. It then discusses modeling a Rubik's Cube by first walking through the code, then modeling the cube and finding moves to solve it. The document covers topics like scripting languages, ECMAScript, object-oriented programming concepts in JavaScript, and modeling a Rubik's Cube to be manipulated programmatically.

V8 is the JavaScript engine used in Google Chrome. It is open source and written in C++ with some parts implemented in embedded JavaScript. V8 uses just-in-time compilation, precise garbage collection, inline caching, and hidden classes to optimize performance. It supports 64-bit versions and has advantages like C-like syntax and bit operations. While documentation is limited, it allows embedding JavaScript in C++ applications and extending it with user libraries.

This document discusses several popular Java libraries including: - Dependency injection frameworks like Guice and Spring - Logging with SLF4J - Collections and utilities with Guava - HTTP clients like OkHttp - Reactive programming with RxJava - REST with Retrofit - Asynchronous programming with JDeferred - Event handling with MBassador - Code generation with Lombok and ByteBuddy - Testing utilities like JUnitParams, Mockito, Jukito, and Spock - Waiting assertions with Awaitility and REST testing with Rest-assured.

This document provides an overview of Scala and compares it to Java. It discusses Scala's object-oriented and functional capabilities, how it compiles to JVM bytecode, and benefits like less boilerplate code and support for functional programming. Examples are given of implementing a simple Property class in both Java and Scala to illustrate concepts like case classes, immutable fields, and less lines of code in Scala. The document also touches on Java interoperability, learning Scala gradually, XML processing capabilities, testing frameworks, and tool/library support.

MongoDB is the trusted document store we turn to when we have tough data store problems to solve. For this talk we are going to go a little bit off the path and explore what other roles we can fit MongoDB into. Others have discussed how to turn MongoDB’s capped collections into a publish/subscribe server. We stretch that a little further and turn MongoDB into a full fledged broker with both publish/subscribe and queue semantics, and a the ability to mix them. We will provide code and a running demo of the queue producers and consumers. Next we will turn to coordination services: We will explore the fundamental features and show how to implement them using MongoDB as the storage engine. Again we will show the code and demo the coordination of multiple applications.

CQRS stands for Command Query Responsibility Segregation. That is, that command stack and query stack are designed separately. This leads to a dramatic simplification of design and potential enhancement of scalability. Events are a new trend in software industry. In real-world, we perform actions and these actions generate a reaction. Event Sourcing is about persisting events and rebuilding the state of the aggregates from recorded events. In this talk I will share a lot of examples about how to effective implementing CQRS and Event Sourcing with RavenDB

This document provides an overview of moving from C++ to Objective-C. It discusses key differences in syntax between the two languages, including differences in class and method declarations. It also covers Objective-C specific topics like protocols, properties, memory management using retain/release, and the role of the NSAutoreleasePool in autoreleasing objects. The document is intended to act as a bridge for developers familiar with C++ to understand fundamental concepts for working with Objective-C.

The document discusses working with code abstract syntax trees (ASTs). It provides examples of parsing code into ASTs using libraries like Esprima, querying ASTs using libraries like grasp-equery, constructing and transforming ASTs, and generating code from ASTs. It introduces aster, an AST-based code builder that allows defining reusable AST transformations as plugins and integrating AST-based builds into generic build systems like Grunt and Gulp. Aster aims to improve on file-based builders by working directly with ASTs in a streaming fashion.

Phactory is an alternative to database fixtures for defining test data in PHP unit tests. It allows developers to define database objects in code and dynamically create them, rather than loading static datasets. Phactory provides a lightweight ORM and works with MySQL, SQLite, and MongoDB. It supports defining object blueprints, creating objects with associations, retrieving objects, and integrating with PHPUnit for testing database code.

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 the Objective-C runtime and provides an overview of its main components and functions. It describes how the runtime works with classes, instances, methods, and message passing. It also covers topics like method resolution, forwarding, and method swizzling. Code examples are provided to illustrate concepts like forwarding messages and swizzling methods. URLs are included for additional Objective-C runtime references and documentation.

Objective-C is an object-oriented programming language that uses message passing to communicate between objects. Objects are represented as C structs with a pointer to their class. The class struct contains metadata about the class like its name, methods, and properties. Objective-C uses a dynamic runtime that allows objects to be modified at runtime via mechanisms like method swizzling and isa swizzling.

The document discusses iPhone app development using Objective-C. It covers the basics of getting started, including what is needed to begin like a Mac, Xcode, and an iPhone. It then explains key Objective-C concepts like classes, methods, and memory management using retain counts. The document also discusses unit testing iOS apps using OCUnit and some Xcode tips. It emphasizes testing first and concludes by noting the market demands more apps and there is room for improvement.

The document shows examples of using blocks and closures in Objective-C and C++, including passing blocks as parameters to functions and defining block types. It also demonstrates capturing values from outer scopes within blocks by copying blocks. Various block examples are provided to illustrate block syntax and usage.