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if (!Function.prototype.bind) {
  Function.prototype.bind = function (oThis) {
    if (typeof this !== "function") {
      // closest thing possible to the ECMAScript 5 internal IsCallable function
      throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
    }

    var aArgs = Array.prototype.slice.call(arguments, 1),
      fToBind = this,
      fNOP = function () {},

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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

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import Foundation

extension String
{
    var length: Int {
        get {
            return countElements(self)
        }
    }
    

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import Foundation

class Box<T> {
    let unbox: T
    init(_ value: T) { self.unbox = value }
}

struct Notification<A> {
    let name: String
}

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

import Foundation
import UIKit

//~~~~~~~~~~~~~~~~ Error handling with enum Result<A> ~~~~~~~

enum Result<A> {
    case Error(NSError)
    case Value(Box<A>)

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import Foundation

class Box<T> {
    let unbox: T
    init(_ value: T) { self.unbox = value }
}

struct Notification<A> {
    let name: String
}

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#!/usr/bin/env xcrun swift -i

import Foundation

enum Result<T, E> {
    
    /*
        We can't use this at the moment due to a LLVM Error:
        error: unimplemented IR generation feature non-fixed multi-payload enum layout
        LLVM ERROR: unimplemented IRGen feature! non-fixed multi-payload enum layout

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- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    UITableViewRowAction *moreAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"More" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
        // show UIActionSheet
    }];
    moreAction.backgroundColor = [UIColor greenColor];
    
    UITableViewRowAction *flagAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Flag" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
        // flag the row
    }];

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func unwrap<T1, T2>(optional1: T1?, optional2: T2?) -> (T1, T2)? {
  switch (optional1, optional2) {
    case let (.Some(value1), .Some(value2)):
      return (value1, value2)
    default:
      return nil
  }
}

func unwrap<T1, T2, T3>(optional1: T1?, optional2: T2?, optional3: T3?) -> (T1, T2, T3)? {

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Libraries

• 960 Grid System - An effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.
• Compass - Open source CSS Authoring Framework.
• Bootstrap - Sleek, intuitive, and powerful mobile first front-end framework for faster and easier web development.
• Font Awesome - The iconic font designed for Bootstrap.
• Zurb Foundation - Framework for writing responsive web sites.
• SASS - CSS extension language which allows variables, mixins and rules nesting.
• Skeleton - Boilerplate for responsive, mobile-friendly development.

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