nathanborror

Using Swift Package Manager with iOS

Step 1:

File > New > Project...

Step 2:

Create a Package.swift file in your root project directory, add dependencies, then run swift package fetch on the command line in the same directory. We’re not going to run swift build because it will just complain.

HamptonMakes

//
//  RBResizer.swift
//  Locker
//
//  Created by Hampton Catlin on 6/20/14.
//  Copyright (c) 2014 rarebit. All rights reserved.
//

import UIKit

kristopherjohnson

import Foundation
import XCPlayground

// Let asynchronous code run
XCPSetExecutionShouldContinueIndefinitely()

if let url = NSURL(string: "http://www.google.com/") {

    let session = NSURLSession.sharedSession()
    

ericdke

let plainString = "foo"

// Encoding

guard let plainData = (plainString as NSString).dataUsingEncoding(NSUTF8StringEncoding) else {
    fatalError()
}

let base64String = plainData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
print(base64String) // Zm9v

aorcsik

extension String {
    /// Truncates the string to length number of characters and 
    /// appends optional trailing string if longer
    func truncate(length: Int, trailing: String? = nil) -> String {
        if countElements(self) > length {
            return self.substringToIndex(advance(self.startIndex, length)) + (trailing ?? "")
        } else {
            return self
        }
    }

kristopherjohnson

// Protocol for a type that supports a fromRaw(Int) conversion
// (such as "enum Foo: Int { ... }")
protocol ConvertibleFromRawInt {
    class func fromRaw(raw: Int) -> Self?
}

// Note: Tried to use Swift's standard RawRepresentable protocol rather
// than ConvertibleFromRawInt, but couldn't get it to compile.
// Don't know whether it is a Swift bug or something I was doing wrong.

Nirma

func reduce<T,R>(list: [T], block: (([R],T) -> R?)) -> [R]? {
    var acc = [R]()
    for x in list {
        if let val = block(acc, x) {
           acc += [val]
        }
    }
    
    return acc
}