Skip to content

Instantly share code, notes, and snippets.

View scotteg's full-sized avatar
🏠
Working from home

Scott Gardner scotteg

🏠
Working from home
View GitHub Profile
@mortenbekditlevsen
mortenbekditlevsen / UIDevice+DetectBlur.h
Last active February 23, 2017 16:35
Detecting whether or not the UIVisualEffectView is available and supports the UIBlurEffect
//
// UIDevice+DetectBlur.h
// BlurTest
//
// Created by Morten Ditlevsen on 28/01/15.
// Copyright (c) 2015 Mojo Apps. All rights reserved.
//
#import <UIKit/UIKit.h>
@MihaelIsaev
MihaelIsaev / HMAC.swift
Last active December 4, 2019 04:51
Easy to use Swift implementation of CommonCrypto HMAC. You can easily hash your String to: md5, sha1, sha224, sha256, sha384, sha512 with pure Swift.
//
// HMAC.swift
//
// Created by Mihael Isaev on 21.04.15.
// Copyright (c) 2014 Mihael Isaev inc. All rights reserved.
//
// ***********************************************************
//
// How to import CommonCrypto in Swift project without Obj-c briging header
//
@scotteg
scotteg / SwiftSpellOutNumber.swift
Last active September 18, 2017 12:04
Converts any number (e.g., 1) or a number string (e.g., "1") into a spelled-out number string (e.g., "one").
import Foundation
/**
Converts any numeric literal (e.g., 1) or string containing a numeric literal (e.g., "1"), into a spelled-out number string (e.g., "one"). [Source on GitHub](http://bit.ly/SwiftSpellOutNumber)
- parameter number: a numeric literal, or string containing a numeric literal
- returns: String?
*/
public func spellOut<N>(number: N) -> String? {
let formatter = NumberFormatter()
formatter.numberStyle = .spellOut
@scotteg
scotteg / SwiftIntIsPrimeExtension.swift
Created August 8, 2015 12:33
A Swift 2 Int extension that checks if an integer is a prime number.
extension Int {
/**
`true` if self is a prime number, i.e., can only be divided evenly by 1 and itself.
- author: Scott Gardner
- seealso:
* [Source on GitHub](http://bit.ly/SwiftIntIsPrimeExtension)
*/
public var isPrime: Bool {
guard self > 1 else {
@scotteg
scotteg / HashableType.swift
Last active December 16, 2016 15:15
A Swift HashableType that enables nesting a Set of any Hashable type within a Set
func ==(x: HashableType, y: HashableType) -> Bool {
return x.isEqual(y.value)
}
struct HashableType: Hashable {
let value: Any
var hashValue: Int {
return getHashValue()
}
@scotteg
scotteg / SwiftArrayOfUIViewsSortInPlaceByTagExtension.swift
Last active April 11, 2020 05:18
Sorts an array of UIViews or subclasses by tag.
extension Array where Element: UIView {
/**
Sorts an array of `UIView`s or subclasses by `tag`. For example, this is useful when working with `IBOutletCollection`s, whose order of elements can be changed when manipulating the views in Interface Builder. Just tag your views in Interface Builder and then call this method on your `IBOutletCollection`s in `viewDidLoad()`.
- author: Scott Gardner
- seealso:
* [Source on GitHub](http://bit.ly/SortUIViewsInPlaceByTag)
*/
mutating func sortUIViewsInPlaceByTag() {
sortInPlace { (left: Element, right: Element) in
@scotteg
scotteg / SwiftQueryItemsDictionaryNSURLExtension.swift
Last active November 30, 2015 13:10
Swift NSURL extension that returns a Dictionary of String keys and String values for each key/value pair in an NSURL query string.
import Foundation
/**
Returns a `Dictionary` of `String` keys and `String` values for each key/value pair in an `NSURL` query string.
- author: Scott Gardner
- seealso:
* [Source on GitHub](http://bit.ly/SwiftQueryItemsDictionaryNSURLExtension)
*/
extension NSURL {
@scotteg
scotteg / SwiftCGPointsOnCircle.swift
Last active January 22, 2020 12:57
Returns an array of `CGPoint`s that are evenly distributed around the circumference of a circle for a given radius, center x, center y, and number of decimal points precision.
import UIKit
/**
Returns an array of `CGPoint`s that are evenly distributed around the circumference of a circle for a number of points, center x, center y, and radius of the circle, and maximum number of decimal points precision for the x and y values.
- author: Scott Gardner
- parameter numberOfPoints: the number of points to plot; 1 or more
- parameter centerX: the center `x` of the circle
- parameter centerY: the center `y` of the circle
- parameter radius: the radius of the circle (distance from center)
- parameter precision: the maximum number of decimal places precision, 0 or higher, **defaults to 3**
@lattner
lattner / async_swift_proposal.md
Last active October 29, 2024 18:53 — forked from oleganza/async_swift_proposal.md
Concrete proposal for async semantics in Swift

Async/Await for Swift

Introduction

Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.

This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.

@lattner
lattner / TaskConcurrencyManifesto.md
Last active November 18, 2024 17:28
Swift Concurrency Manifesto