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@myobie
myobie / mountain-lion-brew-setup.markdown
Created February 18, 2012 20:14
Get Mountain Lion and Homebrew to Be Happy

Get Mountain Lion and Homebrew to Be Happy

1) Install XCode 4.4 into /Applications

Get it from the App Store.

2) Install Command Line Tools

In XCode's Preferences > Downloads you can install command line tools.

@jhaberstro
jhaberstro / num.swift
Last active June 3, 2016 12:17
Swift typeclass example
protocol Num {
class func zero() -> Self
func succ() -> Self
func add(y: Self) -> Self
func multiply(y: Self) -> Self
}
extension Int32: Num {
static func zero() -> Int32 { return 0 }
func succ() -> Int32 { return self + 1 }
@kristopherjohnson
kristopherjohnson / pipe-forward.swift
Last active March 29, 2024 19:44
Swift: define F#-style pipe-forward (|>) operator that evaluates from left to right.
// F#'s "pipe-forward" |> operator
//
// Also "Optional-chaining" operators |>! and |>&
//
// And adapters for standard library map/filter/sorted
infix operator |> { precedence 50 associativity left }
infix operator |>! { precedence 50 associativity left }
infix operator |>& { precedence 50 associativity left }
infix operator |>* { precedence 50 associativity left }
@turowicz
turowicz / swift-json-class.md
Last active February 21, 2017 07:00
Apple Swift strong type object serialization to JSON
@chriseidhof
chriseidhof / parsing.swift
Last active April 16, 2023 02:38
JSON Parsing in Swift
// This code accompanies a blog post: http://chris.eidhof.nl/posts/json-parsing-in-swift.html
//
// As of Beta5, the >>= operator is already defined, so I changed it to >>>=
import Foundation
let parsedJSON : [String:AnyObject] = [
"stat": "ok",
"blogs": [
@CodaFi
CodaFi / Aviary.swift
Last active October 23, 2023 20:32
Fly my pretties
// Playground - noun: a place where people can play
// I wouldn't want a pair of birds that were... too demonstrative.
func idiot<A>(a : A) -> A {
return a
}
func kestrel<A, B>(a : A) -> B -> A {
return { _ in a }
@rnapier
rnapier / gist:8eda179689d9d61c2bfb
Last active August 29, 2015 14:04
And autoclosure saves(?) the day for generic recursive enums
// Creating a generic recursive data structure with autoclosure. (READ ALL NOTES; THIS MAY NOT DO WHAT YOU WANT.)
// Closures are reference types, so the size is known (? I think ?)
// Note that this is just because of unimplemented features in the compiler in Beta5
// There's no reason to think this is a long-term requirement.
// IMPORTANT: the closure will run every time you access this value, so if that has
// side effects, this won't work. It's only possible on pure value types.
// But the fact that this works as expected is actually kind of incredible.
// Think about what is required for it to work out the type for NestedList.Elem("first").
@chriseidhof
chriseidhof / gcd.swift
Created August 28, 2014 01:08
GCD Wrappers
import Foundation
// Executes an array of blocks in parallel, but only returns after they're all done.
func parallel(blocks: [() -> ()]) {
let group = dispatch_group_create()
let queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
for block in blocks {
dispatch_group_async(group, queue, block)
}
@erica
erica / pggrep.swift
Last active November 30, 2018 08:52
Find files in playgrounds, which are otherwise not indexed by spotlight
//
// main.swift
// pggrep - updated 12/4/15
// Created by Erica Sadun on 6/17/15.
// Copyright © 2015 Erica Sadun. All rights reserved.
//
import Foundation
extension String {
//: Playground - noun: a place where people can play
//: http://webyrd.net/scheme-2013/papers/HemannMuKanren2013.pdf
typealias Var = Int
typealias Subst = [(Var, Term)]
typealias State = (Subst, Int)
typealias Goal = State -> Stream
indirect enum Stream {
case Nil, Cons(State, Stream), Lazy(() -> Stream)