Instantly share code, notes, and snippets.

# Assumes you're in the directory with the `.xcodeproj`
killall Xcode
xcrun -k
xcodebuild -alltargets clean
rm -rf "$(getconf DARWIN_USER_CACHE_DIR)/org.llvm.clang/ModuleCache"
rm -rf "$(getconf DARWIN_USER_CACHE_DIR)/org.llvm.clang.$(whoami)/ModuleCache"
rm -rf ~/Library/Developer/Xcode/DerivedData/*
rm -rf ~/Library/Caches/*
rm -rf *.xcodeproj/xcuserdata/
View GenericRSSFolder.swift
//: Playground - noun: a place where people can play
import Cocoa
protocol Feed {
var url: String {get}
protocol Folder {
typealias FeedType
View Closure.swift
func foo(completion: ((String) -> Void)?) {
foo { println($0) } // prints "Heyo"
foo(nil) // doesn't crash
View gist:2dd138f1dcd744d8683a
@interface ClassWithLazyProperty ()
@property (nonatomic) LazyPropertyType *lazyProperty;
@implementation ClassWithLazyProperty
- (LazyPropertyType *)lazyProperty
return _lazyProperty ?: (_lazyProperty = ({
LazyPropertyType *property = [LazyPropertyType new];
// setup property