mayoff

import Dispatch
import Foundation

var x = 7
let dd = withUnsafeBytes(of: &x, { DispatchData.init(bytes: $0) })
print(dd as? Data)                      // Case 1: nil
print(dd as? NSData)                    // Case 2: nil
print(dd as Any as? Data)               // Case 3: nil
print(dd as Any as? NSData)             // Case 4: .some
print(dd as Any as? NSData as Data?)    // Case 5: .some

mayoff

import UIKit
import ImageIO
import MobileCoreServices
import PlaygroundSupport

let documentFolderUrl = try! FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
print(documentFolderUrl)

class ShapeView: UIView {
    override class var layerClass: AnyClass { return CAShapeLayer.self }

mayoff

if [[ $(defaults read com.apple.Finder CreateDesktop 2>/dev/null) = YES ]]; then
	defaults write com.apple.Finder CreateDesktop NO
else
	defaults write com.apple.Finder CreateDesktop YES
fi

mayoff

#!/bin/sh

defaults read com.apple.finder CreateDesktop > /dev/null 2>&1
enabled=$?

if [ "$1" = "off" ]; then
	if [ $enabled -eq 1 ]; then
		defaults write com.apple.finder CreateDesktop false
		osascript -e 'tell application "Finder" to quit'
		open -a Finder

mayoff

@import Foundation;
@import CoreGraphics;

typedef struct __attribute__((objc_boxable)) CGPoint CGPoint;
typedef struct __attribute__((objc_boxable)) CGSize CGSize;
typedef struct __attribute__((objc_boxable)) CGRect CGRect;
typedef struct __attribute__((objc_boxable)) CGVector CGVector;

int main(int argc, const char * argv[]) {
    @autoreleasepool {

mayoff

• http://courses.cms.caltech.edu/cs179/
• http://www.amd.com/Documents/GCN_Architecture_whitepaper.pdf
• https://community.arm.com/graphics/b/blog
• http://cdn.imgtec.com/sdk-documentation/PowerVR+Hardware.Architecture+Overview+for+Developers.pdf
• http://cdn.imgtec.com/sdk-documentation/PowerVR+Series5.Architecture+Guide+for+Developers.pdf
• https://www.imgtec.com/blog/a-look-at-the-powervr-graphics-architecture-tile-based-rendering/
• https://www.imgtec.com/blog/the-dr-in-tbdr-deferred-rendering-in-rogue/
• http://developer.amd.com/tools-and-sdks/opencl-zone/amd-accelerated-parallel-processing-app-sdk/opencl-optimization-guide/#50401334_pgfId-412605
• https://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-graphics-pipeline-2011-index/
• https://community.arm.com/graphics/b/documents/posts/moving-mobile-graphics#siggraph2015

mayoff

// For https://twitter.com/nicklockwood/status/819938181483233285

protocol Withable {
    init()
}

extension Withable {
    func with(_ body: (inout Self) -> ()) -> Self {
        var copy = self
        body(&copy)

mayoff

 a:  AM/PM
 A:	0~86399999 (Millisecond of Day)
 
 c/cc:	1~7 (Day of Week)
 ccc:	Sun/Mon/Tue/Wed/Thu/Fri/Sat
 cccc:	Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday
 
 d:	1~31 (0 padded Day of Month)
 D:	1~366 (0 padded Day of Year) 
 

mayoff

import AppKit

public extension NSBezierPath {

    public var CGPath: CGPath {
        let path = CGMutablePath()
        var points = [CGPoint](repeating: .zero, count: 3)
        for i in 0 ..< self.elementCount {
            let type = self.element(at: i, associatedPoints: &points)
            switch type {

mayoff

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