adamawolf

i386 : iPhone Simulator
x86_64 : iPhone Simulator
arm64 : iPhone Simulator
iPhone1,1 : iPhone
iPhone1,2 : iPhone 3G
iPhone2,1 : iPhone 3GS
iPhone3,1 : iPhone 4
iPhone3,2 : iPhone 4 GSM Rev A
iPhone3,3 : iPhone 4 CDMA
iPhone4,1 : iPhone 4S

twobitlabs

// http://cocoawithlove.com/2009/10/ugly-side-of-blocks-explicit.html has a nice breakdown of the syntax--it helps to think of the ^ as similar to a pointer dereference symbol *

// block typedef:

    typedef void(^Block)();
    typedef void(^ConditionalBlock)(BOOL);
    typedef NSString*(^BlockThatReturnsString)();
    typedef NSString*(^ConditionalBlockThatReturnsString)(BOOL);

// block property with typedef:

steipete

// Taken from the commercial iOS PDF framework http://pspdfkit.com.
// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
// Licensed under MIT (http://opensource.org/licenses/MIT)
//
// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.

// PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit.

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

steipete

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
    // Horrible HACK for bug in UITextView where it won't scroll to the new line after pressing enter in the text view.
    // I feel dirty for having to write this. Buggy at least within iOS 7.0 - 7.1b1.
    if (PSPDFIsUIKitFlatMode() && [text isEqualToString:@"\n"] && range.location == textView.text.length) {
        dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC));
        dispatch_after(popTime, dispatch_get_main_queue(), ^{
            CGPoint contentOffset = textView.contentOffset;
            CGFloat fontSize = textView.font.pointSize;
            if (textView.contentSize.height - fontSize > textView.bounds.size.height) {
                contentOffset.y += fontSize + 2.f; // add spacing

kyleve

/**
 Provides the ability to verify key paths at compile time.
 
 If "keyPath" does not exist, a compile-time error will be generated.
 
 Example:
    // Verifies "isFinished" exists on "operation".
    NSString *key = SQKeyPath(operation, isFinished);
 
    // Verifies "isFinished" exists on self.

jeffbailey

- (void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];

    self.imageView.layer.masksToBounds = YES;
    self.imageView.layer.cornerRadius = self.imageView.bounds.size.width / 2.;
}

justin

#import <objc/objc-runtime.h>
#import "UIView+SGAutoLayoutExtensions.h"

@implementation UIView (SGAutoLayoutExtensions)

#ifdef DEBUG

- (NSString *)nsli_description 
{
    return [self restorationIdentifier] ?: [NSString stringWithFormat:@"%@:%p", [self class], self];

peeblesjs

operator infix --> {}
func --> (instance: Any, key: String) -> Any? {
    let mirror = reflect(instance)
    
    for index in 0 ..< mirror.count {
        let (childKey, childMirror) = mirror[index]
        if childKey == key {
            return childMirror.value
        }
    }

ryanolsonk

krzyzanowskim

import Cocoa

// for-in
func checkForIn(array: [Int], dict: [Int: String]) {
    for num in array where dict[num] != nil {
        num
    }
}

checkForIn([1,2,3,4], dict: [1:"one", 2:"two"])