lanephillips

CGFloat ScaleToAspectFitRectInRect(CGRect rfit, CGRect rtarget)
{
    // first try to match width
    CGFloat s = CGRectGetWidth(rtarget) / CGRectGetWidth(rfit);
    // if we scale the height to make the widths equal, does it still fit?
    if (CGRectGetHeight(rfit) * s <= CGRectGetHeight(rtarget)) {
        return s;
    }
    // no, match height instead
    return CGRectGetHeight(rtarget) / CGRectGetHeight(rfit);

scottdelly

//If you have a Bridging-Header:
#import <FBSDKCoreKit/FBSDKCoreKit.h>
#import <FBSDKLoginKit/FBSDKLoginKit.h>

//In your AppDelegate:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [String: AnyObject]?) -> Bool {
    //App launch code
    FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
    //Optionally add to ensure your credentials are valid:

Ashton-W

<?xml version="1.0" encoding="UTF-8"?>
<Bucket
   type = "2"
   version = "2.0">
   <Breakpoints>

      <!-- All Exceptions -->
      <BreakpointProxy
         BreakpointExtensionID = "Xcode.Breakpoint.ExceptionBreakpoint">
         <BreakpointContent

oleganza

Async semantics proposal for Swift

Modern Cocoa development involves a lot of asynchronous programming using blocks and NSOperations. A lot of APIs are exposing blocks and they are more natural to write a lot of logic, so we'll only focus on block-based APIs.

Block-based APIs are hard to use when number of operations grows and dependencies between them become more complicated. In this paper I introduce asynchronous semantics and Promise type to Swift language (borrowing ideas from design of throw-try-catch and optionals). Functions can opt-in to become async, programmer can compose complex logic involving asynchronous operations while compiler produces necessary closures to implement that logic. This proposal does not propose new runtime model, nor "actors" or "coroutines".

Table of contents

rnapier

import Swift

/*:
    A simple type-erased sequence
*/
let seq = AnySequence([1,2,3])


/*:
    ## Who Needs Types Like That?

marciomeschini

• create a new project from Xcode
• open a terminal, go to the project folder
• pod init
• open Podfile, add:

pod 'Fabric'
pod 'Crashlytics'

• pod install
• open workspace

numist

import Darwin // Provides: sin/cos/tan

// memoize function from https://gist.github.com/berkus/8a9e104f8aac5d025eb5
func memoize<T: Hashable, U>( body: ( (T)->U, T )->U ) -> (T)->U {
    var memo = Dictionary<T, U>()
    var result: ((T)->U)!
    result = { x in
        if let q = memo[x] { return q }
        let r = body(result, x)
        memo[x] = r

steventroughtonsmith

import PlaygroundSupport
import Foundation
import UIKit

Bundle(path: "/System/Library/PrivateFrameworks/DrawingKit.framework")?.load()
let DKInkView = NSClassFromString("DKInkView") as! UIView.Type

extension UIView {
    func newGPUAvailable() -> Bool {

JohnSundell

#!/usr/bin/env bash

# This script switches between the App Store version of Xcode and the beta
# Install it by copying it to /usr/local/bin/xcode-switch and running 'chmod +x' on it (to make it executable)
# Then run it using 'sudo xcode-switch'

if [ "$EUID" -ne 0 ]; then
    echo "xcode-select requires you to run this script as root; 'sudo xcode-switch'"
    exit
fi

chriseidhof

//
//  main.swift
//  ExtensibleEffects
//
//  Created by Chris Eidhof on 02.01.18.
//  Copyright © 2018 objc.io. All rights reserved.
//

import Foundation