lattner

Async/Await for Swift

• Proposal: SE-XXXX
• Authors: Chris Lattner, Joe Groff

Introduction

Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.

This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.

bdash

#import <Foundation/Foundation.h>

@interface Base : NSObject
@end

@interface GenericCollection<T: Base *> : NSObject
@end

@class Derived2;

subfuzion

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

gkoehler

//
//  ViewController.swift
//  collView2
//
//  Created by Gavin Koehler on 11/11/15.
//  Copyright © 2015 From Now On, LLC. All rights reserved.
//

import UIKit

xareelee

// Release under MIT
// Copyright (C) 2015 Xaree Lee

#import <Foundation/Foundation.h>

/* Get property name for the class (C string or NSSting). */
#define keypathForClass(Klass, PropertyName) \
        (((void)(NO && ((void)[Klass _nullObjectForCheckingPropertyName].PropertyName, NO)), # PropertyName))
#define keypathStringForClass(Klass, PropertyName) \
        @keypathForClass(Klass, PropertyName)

sindresorhus

# -fobjc-arc: enables ARC
# -fmodules: enables modules so you can import with `@import AppKit;`
# -mmacosx-version-min=10.6: support older OS X versions, this might increase the binary size

clang main.m -fobjc-arc -fmodules -mmacosx-version-min=10.6 -o main

n-b

//#!/usr/bin/env objc-run

#import <Foundation/Foundation.h>
#import <objc/runtime.h>
#import <objc/message.h>

///
/// Typedefs

typedef id (^TargetMethod)(id arg);

jspahrsummers

/// Observes a run loop to detect any stalling or blocking that occurs.
///
/// This class is thread-safe.
@interface GHRunLoopWatchdog : NSObject

/// Initializes the receiver to watch the specified run loop, using a default
/// stalling threshold.
- (id)initWithRunLoop:(CFRunLoopRef)runLoop;

/// Initializes the receiver to detect when the specified run loop blocks for

arturlector

Вопросы на собеседование iOS разработчика (дополненное издание):

General:

• Что такое полиморфизм?

• Что такое *инкапсуляция? Что такое *нарушение инкапсуляции?

• Чем абстрактный класс отличается от интерфейса?

• Расскажите о паттерне MVC. Чем отличается пассивная модель от активной?

quinntaylor

// See http://nshipster.com/key-value-observing/
// Put this code a common utilities header, and use it to have the compiler help check correctness of key paths.
// Uses macro stringification to create an Obj-C string literal, plus validation code that the compiler optimizes out.

@interface NSObject (KeyPathFakeCategoryForCompilerWarnings)
+ (instancetype)__fake_method_for_compiler_warnings__;
- (instancetype)__fake_method_for_compiler_warnings__;
@end

/*! Returns a string for the given keypath, but causes a compiler warning if the keypath is not defined on \c self.