andymatuschak

//
//  MultiDirectionAdjudicatingScrollView.swift
//  Khan Academy
//
//  Created by Andy Matuschak on 12/16/14.
//  Copyright (c) 2014 Khan Academy. All rights reserved.
//

import UIKit
import UIKit.UIGestureRecognizerSubclass

erica

Swift Don'ts

• Don't add code cruft. Avoid parentheses around conditions in if-statements or with the return keyword. Don't add semicolons except where syntactically demanded in statements or to separate statements on the same line.
• Don't use ALL_CAPS; use camelCase
• Don't fight type inference. Use enumeration prefixes, self-references, and class names (with constructors) only when necessary or to clarify coding intent.
• Don't use var when let is appropriate, especially for properties. The compiler better optimizes let statements for items whose values will not change during their lifetime. For example, Apple writes, "It is good practice to create immutable collections in all cases where the collection does not need to change. Doing so enables the Swift compiler to optimize the performance of the collections you create."
• Don't use classes when structs will do. Use class

ngs

var Dictionary;
if (!Dictionary) {
    Dictionary = {};
}

(function () {
    'use strict';

    function f(n) {
        // Format integers to have at least two digits.

axelarge

#define COMPARE(A, B) ({ \
  __typeof__(A) __a = (A); \
  __typeof__(B) __b = (B); \
  __a < __b ? NSOrderedAscending : __a == __b ? NSOrderedSame : NSOrderedDescending; \
})

cdzombak

See this SO discussion.

radars

• 16744288, closed as a dupe of 14459641
• 15638008

solutions

• https://github.com/simonwhitaker/swmath — define new functions which utilize clang function overloading

keremk

// Playground - noun: a place where people can play

import UIKit

var str = "Hello, playground"

enum TimeIntervalUnit {
  case Seconds, Minutes, Hours, Days, Months, Years
  
  func dateComponents(interval: Int) -> NSDateComponents {

dittos

import sys; reload(sys); sys.setdefaultencoding('utf-8')

import sqlite3
import urllib2
import urllib
import simplejson

login = 'your github id'
token = 'your github api key'
repo = 'username/reponame'