timvermeulen

extension String {
    init<T>(dumping x: T) {
        self.init()
        dump(x, to: &self)
    }
}

func assertDumpsEqual<T>(_ lhs: @autoclosure () -> T, _ rhs: @autoclosure () -> T, file: StaticString = #file, line: UInt = #line) {
    assert(String(dumping: lhs()) == String(dumping: rhs()), "Expected dumps to be equal.", file: file, line: line)
}

nixzhu

import Foundation

typealias CancelableTask = (cancel: Bool) -> Void

func delay(time: NSTimeInterval, work: dispatch_block_t) -> CancelableTask? {

    var finalTask: CancelableTask?

    var cancelableTask: CancelableTask = { cancel in
        if cancel {

leichunfeng

//
//  NSNull+LCFMessageForwarding.h
//  NSNull
//
//  Created by leichunfeng on 15/12/22.
//  Copyright © 2015年 leichunfeng. All rights reserved.
//

#import <Foundation/Foundation.h>