jrsonline

struct NSLoggerStream : TextOutputStream {
    mutating func write(_ string: String) {
        guard string.count > 0 && string != "\n" else { return }
        NSLog(string)
    }
}

// Test
var logger = NSLoggerStream()

drumnkyle

/*
The MIT License

Copyright (c) 2010-2018 Google, Inc. http://angularjs.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

DougGregor

import Darwin

@dynamicMemberLookup
struct Environment {
  subscript(dynamicMember name: String) -> String? {
    get {
      guard let value = getenv(name) else { return nil }

      return String(validatingUTF8: value)
    }

tclementdev

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

• You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

• Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

danielctull

extension UICollectionViewFlowLayout {

    typealias DelegateMethod<Key, Value> = ((UICollectionView, UICollectionViewLayout, Key) -> Value)

    private var delegate: UICollectionViewDelegateFlowLayout? {
        return collectionView?.delegate as? UICollectionViewDelegateFlowLayout
    }

    func retrieve<Key, Value>(

lsavino

DEPRECATED for Xcode 10 🎈

(check out What's New in Swift at 11:40, slide 42)

Whole Module Compilation Optimizations: Why these terms are sometimes misleading

When you look up how to compile swift faster for debug builds, people very earnestly give advice that seems contradictory: you should "try using the whole module optimization flag," and also "never use whole module optimization for debugging". [^1]

This is confusing because some of us are using these two general words:

compilation: "turning text into an executable program"

ole

import XCTest

/// An expectation that is fulfilled when a Key Value Observing (KVO) condition
/// is met. It's variant of `XCTKVOExpectation` with support for native Swift
/// key paths.
final class KVOExpectation: XCTestExpectation {
    private var kvoToken: NSKeyValueObservation?

    /// Creates an expectation that is fulfilled when a KVO change causes the
    /// specified key path of the observed object to have an expected value.

chriseidhof

import Foundation

// Alternatives to `Scanner` (before: `NSScanner`).


// A scanner only needs a way to peek and to move to the next token.
protocol ScannerProtocol {
    associatedtype Token: Equatable
    var peek: Token? { get }
    mutating func moveToNextToken()

zakkak

# [<tag>] (If applied, this commit will...) <subject> (Max 72 char)
# |<----   Preferably using up to 50 chars   --->|<------------------->|
# Example:
# [feat] Implement automated commit messages

# (Optional) Explain why this change is being made
# |<----   Try To Limit Each Line to a Maximum Of 72 Characters   ---->|

# (Optional) Provide links or keys to any relevant tickets, articles or other resources
# Example: Github issue #23

DejanEnspyra

//
//  Obfuscator.swift
//
//  Created by Dejan Atanasov on 2017-05-31.
//

import Foundation

class Obfuscator: AnyObject {