jonsterling

NSString *safe = self.keys.url.port.stringValue;
NSString *unsafe = @"url.port.stringValue";
assert([safe isEqualToString:unsafe]);

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

steipete

// Defines a yet undocumented method to add a warning if super isn't called.
#ifndef NS_REQUIRES_SUPER
#if __has_attribute(objc_requires_super)
#define NS_REQUIRES_SUPER __attribute((objc_requires_super))
#else
#define NS_REQUIRES_SUPER
#endif
#endif

@interface UIViewController (SubclassingWarnings)

adambard

; Comments start with semicolons.

; Clojure is written in "forms", which are just
; lists of things inside parentheses, separated by whitespace.
;
; The clojure reader  assumes that the first thing is a
; function or macro to call, and the rest are arguments.
;
; Here's a function that sets the current namespace:
(ns test)

orta

+ (NSAttributedString *)artsyBodyTextAttributedStringFromHTML:(NSString *)HTML withFont:(UIFont *)font
{
    NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
    style.lineHeightMultiple = 1.2;

    style.paragraphSpacing = font.pointSize * .5;

    NSDictionary *textParams = @{
        NSFontAttributeName : font,
        NSParagraphStyleAttributeName : style,

jordoh

--- Stubs for entity.* callbacks defined in C++.
--
-- DO NOT INCLUDE this file in your scripts, it is for documentation purposes only.
--
-- Entity callbacks query and mutate the specific entity that is running the
-- lua script. They can be called from a _different_ entity using
-- world.callScriptedEntity(targetEntityId, "entity.*"), replacing "*" with the
-- name of a function defined below.
--
-- Specific types of entities (e.g. NPCs, Objects) define different sets of

andymatuschak

//
//  CollectionViewDataSource.swift
//  Khan Academy
//
//  Created by Andy Matuschak on 10/14/14.
//  Copyright (c) 2014 Khan Academy. All rights reserved.
//

import UIKit

CodaFi

/// Sectional Sale

prefix operator >> {}
postfix operator >> {}

public prefix func >>(rhs: UInt16) -> UInt16 -> UInt16 {
	return { lhs in lhs >> rhs }
}

public postfix func >>(lhs: UInt16) -> UInt16 -> UInt16 {

andymatuschak

struct User {
	let id: Int
	let name: String
	let email: String?
}

extension User: JSONDecodable {
	static func create(id: Int, name: String, email: String?) -> User {
		return User(id: id, name: name, email: email)
	}

chriseidhof

import Cocoa

struct Person {
    var name: String = "John"
    var age: Int = 50
    var dutch: Bool = false
    var address: Address? = Address(street: "Market St.")
}

struct Address {