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?

nbhasin2

           //Group 4 will be executed last after 1-3 are done executing
           //Multi Threadin in Swift Group Dispatch Example 
           //Global Dispatch Queue
           
            let dispatchGroup = dispatch_group_create()
            
            
             dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), {
                
            

dulacp

# Builds a Libjpeg framework for the iPhone and the iPhone Simulator.
# Creates a set of universal libraries that can be used on an iPhone and in the
# iPhone simulator. Then creates a pseudo-framework to make using libjpeg in Xcode
# less painful.
#
# To configure the script, define:
#    IPHONE_SDKVERSION: iPhone SDK version (e.g. 8.1)
#
# Then go get the source tar.bz of the libjpeg you want to build, shove it in the
# same directory as this script, and run "./libjpeg.sh". Grab a cuppa. And voila.

mattrajca

//
//  AppDelegate.m
//  MetalComputeOSX
//

#import "AppDelegate.h"

@import Metal;

#define IMAGE_SIZE 128

galek

in vec2 v_texcoord; // texture coords
in vec3 v_normal;   // normal
in vec3 v_binormal; // binormal (for TBN basis calc)
in vec3 v_pos;      // pixel view space position

out vec4 color;

layout(std140) uniform Transforms
{
    mat4x4 world_matrix;  // object's world position

rpetrano

void mainImage(out vec4 fragColor, in vec2 fragCoord)
{
   vec2 mpos = iMouse.xy / iResolution.xy;
   vec2 pos = fragCoord.xy / iResolution.xy;
 
   const float R = 1.5;

   vec2 kpos = pos - mpos;
   float r = length (kpos);
   float phi = atan (kpos.y, kpos.x);

nathanborror

Using Swift Package Manager with iOS

Step 1:

File > New > Project...

Step 2:

Create a Package.swift file in your root project directory, add dependencies, then run swift package fetch on the command line in the same directory. We’re not going to run swift build because it will just complain.

codelynx

//
//	MTLTexture+Z.swift
//	ZKit
//
//	The MIT License (MIT)
//
//	Copyright (c) 2016 Electricwoods LLC, Kaz Yoshikawa.
//
//	Permission is hereby granted, free of charge, to any person obtaining a copy 
//	of this software and associated documentation files (the "Software"), to deal 

ycditchf

- (void)setupRunloopObserver
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        CFRunLoopRef runloop = CFRunLoopGetCurrent();
        
        CFRunLoopObserverRef enterObserver;
        enterObserver = CFRunLoopObserverCreate(CFAllocatorGetDefault(),
                                                kCFRunLoopEntry | kCFRunLoopExit,
                                                true,

jepers

import Foundation


/// Writes a canonical hex+ASCII representation of `bytes` into `output`.
func hexdump<Target>(_ bytes: UnsafeRawBufferPointer, to output: inout Target)
    where Target: TextOutputStream
{
    guard bytes.count > 0 else { return }
    var asciiString = ""