danielctull

import Combine

extension URLSession {

    /// Returns a publisher that wraps a URL session download task for a given
    /// URL.
    ///
    /// - Parameter url: The URL for which to create a download task.
    /// - Returns: A publisher that wraps a download task for the URL.

xcodereleases

#import <Cocoa/Cocoa.h>

@protocol FilePath <NSObject>
+ (instancetype)filePathForPathString:(NSString *)path;
@end

@protocol NamedVersion <NSObject>
- (NSString *)name;
@end

timonus

- (UIImage *)dynamicImage
{
    UITraitCollection *const baseTraitCollection = /* an existing trait collection */;
    UITraitCollection *const lightTraitCollection = [UITraitCollection traitCollectionWithTraitsFromCollections:@[baseTraitCollection, [UITraitCollection traitCollectionWithUserInterfaceStyle:UIUserInterfaceStyleLight]]];
    UITraitCollection *const purelyDarkTraitCollection = [UITraitCollection traitCollectionWithUserInterfaceStyle:UIUserInterfaceStyleDark];
    UITraitCollection *const darkTraitCollection = [UITraitCollection traitCollectionWithTraitsFromCollections:@[baseTraitCollection, purelyDarkTraitCollection]];
    
    __block UIImage *lightImage;
    [lightTraitCollection performAsCurrentTraitCollection:^{
        lightImage = /* draw image */;

chriseidhof

//
//  ParseLib.swift
//  JsxLib
//
//  Created by Chris Eidhof on 19.02.19.
//

import Foundation

public struct ParseError: Error {

chriseidhof

//
//  main.swift
//  OptionParser
//
//  Created by Chris Eidhof on 28.02.19.
//  Copyright © 2019 objc.io. All rights reserved.
//

import Foundation

mxcl

#!/usr/bin/swift sh
import Foundation
import PromiseKit  // @mxcl ~> 6.5
import Swifter     // @mattdonnelly == b27a89

let swifter = Swifter(
    consumerKey: "FILL",
    consumerSecret: "ME",
    oauthToken: "IN",
    oauthTokenSecret: "https://developer.twitter.com/en/docs/basics/apps/overview.html"

joshavant

extension UIView {
    @objc func exerciseAmbiguityInLayoutRepeatedly() {
        if self.hasAmbiguousLayout {
            Timer.scheduledTimer(timeInterval: 0.5,
                                 target: self,
                                 selector: #selector(UIView.exerciseAmbiguityInLayout),
                                 userInfo: nil,
                                 repeats: true)
        }
    }

fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

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

pnc

#!/bin/bash

set -e

CONTENTS=$(tesseract -c language_model_penalty_non_dict_word=0.8 --tessdata-dir /usr/local/share/tessdata/ "$1" stdout -l eng | xml esc)

hex=$((cat <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">