ikesyo

RACSignal *numberSignal = @[ @1, @2, @3 ].rac_sequence.signal;

// signal of @2, @4, @6
[numberSignal map:^ id (NSNumber number) {
	return @(number.integerValue * 2);
}];

// signal of something like
// @{ @"id": @1, @"name": @"Name 1" },
// @{ @"id": @2, @"name": @"Name 2" },

ikesyo

protocol Num {
    typealias N
    class func zero() -> N
    func succ() -> N
    func add(other: N) -> N
    func multiply(other: N) -> N
}

extension Int8: Num {
    typealias N = Int8

ikesyo

// https://twitter.com/akisutesama/status/596501848313372672
// https://twitter.com/_ishkawa/status/596504826655088640

var god: String? = "god"

func makeItFuck(x: String) -> String {
    return x + " fuck"
}

var godfuck1 = god.map { $0 + " fuck" } // String?

ikesyo

func curry<A, B, C, Result>(f: (A, B, C) -> Result) -> A -> B -> C -> Result {
    return { a in { b in { c in f(a, b, c) } } }
}

struct Hoge {
    let a: String
    let b: Int
    let c: Bool?
}

ikesyo

import Himotoki

struct User: Decodable { ... }

struct Foo: Decodable {
    let name: String
    let users: [User]
    
    static func decode(e: Extractor) -> Foo? {
        let create = { Foo($0) }

ikesyo

public func toScopedDisposable(disposable: Disposable) -> ScopedDisposable {
    return ScopedDisposable(disposable)
}

ikesyo

Pod::Spec.new do |s|
  s.name     = 'DescriptionBuilder'
  s.version  = '0.1'
  s.platform = :ios
  s.summary  = 'DescriptionBuilder is helper class to make easier implementing NSObject description method.
				Or dump all instance variables of any object. '
  s.homepage = 'https://github.com/kishikawakatsumi/DescriptionBuilder'
  s.author   = { 'KISHIKAWA Katsumi' => 'kishikawakatsumi@gmail.com' }
  s.source   = { :git => 'https://github.com/kishikawakatsumi/DescriptionBuilder.git', :branch => 'master' }

ikesyo

// Use Parse.Cloud.define to define as many cloud functions as you want.
// For example:
Parse.Cloud.define("hello", function(request, response) {
  var acl = new Parse.ACL();
  var role = new Parse.Role("testRole", acl);
  role.save();
  response.success("Hello world!");
});

ikesyo

let values = [ "1", "foo", "3" ]

// Swift 1.2

extension Array {
    func filterMap(@noescape transform: T -> U?) -> [U] {
        var results = [U]()
        for x in self {
            if let mapped = transform(x) {
                results.append(mapped)

ikesyo

Pod::Spec.new do |s|
  s.name         = "ReactiveCocoa"
  s.version      = "2.0-RC1"
  s.summary      = "A framework for composing and transforming sequences of values."
  s.homepage     = "https://github.com/blog/1107-reactivecocoa-is-now-open-source"
  s.author       = { "Justin Spahr-Summers" => "jspahrsummers@github.com", "Josh Abernathy" => "josh@github.com" }
  s.source       = { :git => "https://github.com/ReactiveCocoa/ReactiveCocoa.git", :tag => "v#{s.version}" }
  s.license      = { :type => 'MIT', :file => 'LICENSE.md' }
  s.description  = "ReactiveCocoa (RAC) is an Objective-C framework for Functional Reactive Programming. It provides APIs for composing and transforming streams of values."