| import UIKit | |
| // The marshal operator is reviewed in this blog post… | |
| // http://ijoshsmith.com/2014/07/05/custom-threading-operator-in-swift/ | |
| // Don't ever do something this ridiculous in a real app! | |
| func printMarshalOperator() | |
| { | |
| {p("M")} |
I frequently administer remote servers over SSH, and need to copy data to my clipboard. If the text I want to copy all fits on one screen, then I simply select it with my mouse and press CMD-C, which asks relies on m y terminal emulator (xterm2) to throw it to the clipboard.
This isn't practical for larger texts, like when I want to copy the whole contents of a file.
If I had been editing large-file.txt locally, I could easily copy its contents by using the pbcopy command:
| @interface PSPDFThreadSafeMutableDictionary : NSMutableDictionary | |
| @end | |
| #import "PSPDFThreadSafeMutableDictionary.h" | |
| #import <libkern/OSAtomic.h> | |
| @implementation PSPDFThreadSafeMutableDictionary { | |
| OSSpinLock _lock; | |
| NSMutableDictionary *_dictionary; // Class Cluster! |
| // The purpose of this gist is to provide examples of many real life date computations | |
| // This is uploaded as a gist so that it can be copy and pasted into either a OS X or | |
| // iOS project. You can either take it all "[Cmd]+[A], [Cmd]+[C]" or just a small piece. | |
| // The results are fairly well formattes as log output and I recommend that you run this | |
| // code to see the actual results yourself. Change some of the values and see what happens. | |
| #pragma mark - Setup | |
| NSString *line = @"–––––––––––––––––––––––––––––––––––––––––––––––––––––––"; |
| // Taken from the commercial iOS PDF framework http://pspdfkit.com. | |
| // Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved. | |
| // Licensed under MIT (http://opensource.org/licenses/MIT) | |
| // | |
| // You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it. | |
| // PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit. | |
| #import <objc/runtime.h> | |
| #import <objc/message.h> |
| #!/usr/sbin/dtrace -s | |
| /* Run like: | |
| % sudo csh | |
| # ./spy.d $PROCESS_ID [$INTERESTING_PROBEPROV] | |
| Prints a line of dashes every 5 seconds to delineate different experiments. | |
| */ | |
| #pragma D option quiet |
| - (UIViewController *)topViewController{ | |
| return [self topViewController:[UIApplication sharedApplication].keyWindow.rootViewController]; | |
| } | |
| - (UIViewController *)topViewController:(UIViewController *)rootViewController | |
| { | |
| if (rootViewController.presentedViewController == nil) { | |
| return rootViewController; | |
| } | |
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| - (UIImage *)pspdf_preloadedImage { | |
| CGImageRef image = self.CGImage; | |
| // make a bitmap context of a suitable size to draw to, forcing decode | |
| size_t width = CGImageGetWidth(image); | |
| size_t height = CGImageGetHeight(image); | |
| CGColorSpaceRef colourSpace = CGColorSpaceCreateDeviceRGB(); | |
| CGContextRef imageContext = CGBitmapContextCreate(NULL, width, height, 8, width*4, colourSpace, | |
| kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Little); |
| /* | |
| * Example of `builder' design pattern. | |
| * Copyright (C) 2011 Radek Pazdera | |
| * | |
| * This program is free software: you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License as published by | |
| * the Free Software Foundation, either version 3 of the License, or | |
| * (at your option) any later version. | |
| * | |
| * This program is distributed in the hope that it will be useful, |
