mono0926

//
//  Database.swift
//  Model
//
//  Created by mono on 2017/10/14.
//  Copyright © 2017 Masayuki Ono All rights reserved.
//

import Foundation
import FirebaseCore

shu223

// Modified from: https://github.com/katleta3000/CancelBlocks/blob/master/CancelBlocks.swift

typealias dispatch_cancelable_block_t = (cancel: Bool) -> (Void)

private func dispatch_after_delay(delay: Double, queue: dispatch_queue_t, block: dispatch_block_t?) -> dispatch_cancelable_block_t? {
    guard let block = block else { return nil }
    var originalBlock: dispatch_block_t? = block
    var cancelableBlock: dispatch_cancelable_block_t? = nil
    let delayBlock: dispatch_cancelable_block_t = {(cancel: Bool) -> Void in
        if let originalBlock = originalBlock where !cancel {

airspeedswift

extension Array where Element: Comparable
{
    mutating func mergesortInPlace() {
        
        var tmp: [Generator.Element] = []
        tmp.reserveCapacity(numericCast(self.count))
        
        func merge(lo: Int, _ mi: Int, _ hi: Int) {
            tmp.removeAll(keepCapacity: true)
            tmp.extend(self[lo..<hi])

davidpdrsn

import Foundation

// Build 100 random numbers between 0 and 100
var numbers = Int[]()
for i in 1..100 {
    let n = Int(arc4random() % 101)
    numbers.append(n)
}

func elementsInRange<T>(a: T[], start: Int, end: Int) -> (T[]) {

landonf

A result type (based on swiftz) that can represent either an error or success:

enum Result<X, T> {
  case Err(() -> X)
  case Ok(() -> T)
}

Now we need a way to chain multiple results together without lots of nesting of if statements -- or exceptions. To do so, we can define a new bind (result, next) operator (implementation borrowed from swiftz) that operates on Result types (a.k.a flatMap or >>=):

• If the result is Err, the result is immediately returned.