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Logan Wang azone

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@tonyarnold
tonyarnold / gist:2010649
Created March 10, 2012 07:22
Exhaustively check if an Objective-C object is "empty"
static inline BOOL CBIsEmpty(id obj) {
return obj == nil
|| (NSNull *)obj == [NSNull null]
|| ([obj respondsToSelector:@selector(length)] && [obj length] == 0)
|| ([obj respondsToSelector:@selector(count)] && [obj count] == 0);
}
@tonyarnold
tonyarnold / NSUserDefaultsObjectSubscripting.h
Created July 29, 2012 07:51
Add simple object subscripting to NSUserDefaults
//
// NSUserDefaults+ObjectSubscripting.h
//
// Created by Tony Arnold on 29/07/12.
// Copyright (c) 2012 The CocoaBots. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface NSUserDefaults (ObjectSubscripting)
@adamgit
adamgit / gist:3705459
Last active December 17, 2024 00:14
Automatically create cross-platform (simulator + device) static libraries for Objective C / iPhone / iPad
##########################################
#
# c.f. http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4
#
# Version 2.82
#
# Latest Change:
# - MORE tweaks to get the iOS 10+ and 9- working
# - Support iOS 10+
# - Corrected typo for iOS 1-10+ (thanks @stuikomma)
@angelolloqui
angelolloqui / UIImage+H568.m
Last active October 30, 2025 15:55
iPhone5 UIImage method swizzling to load -568h images
//
// UIImage+H568.m
//
// Created by Angel Garcia on 9/28/12.
// Copyright (c) 2012 angelolloqui.com. All rights reserved.
//
#import <objc/runtime.h>
@implementation UIImage (H568)
@riccardomarotti
riccardomarotti / gist:3963225
Created October 27, 2012 06:39
Extract first page of each passed PDF, in temporary PDF files.
#! /usr/bin/python
#
import sys
import os
import tempfile
from Quartz.CoreGraphics import *
from os.path import splitext
from os.path import basename
from os.path import join
@dergachev
dergachev / GIF-Screencast-OSX.md
Last active July 25, 2026 13:41
OS X Screencast to animated GIF

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Screencapture GIF

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

@nielsbot
nielsbot / gist:5155671
Last active June 3, 2026 03:16
A wrapper around kqueue to monitor changes to files. Works on iOS.
#import "FileChangeObserver.h"
#undef Assert
#define Assert(COND) { if (!(COND)) { raise( SIGINT ) ; } }
@interface FileChangeObserver ()
@property ( nonatomic, readonly ) int kqueue ;
@property ( nonatomic ) enum FileChangeNotificationType typeMask ;
@end
@Tricertops
Tricertops / gist:5483361
Created April 29, 2013 17:49
Helper functions to round screen coordinates and dimensions to screen scale.
CGFloat CGFloatAdjustToScreenScale(CGFloat value, NSRoundingMode mode) {
CGFloat (*roundingFunction)(CGFloat);
switch (mode) {
case NSRoundPlain: roundingFunction = &roundf; break;
case NSRoundUp: roundingFunction = &ceilf; break;
case NSRoundDown: roundingFunction = &floorf; break;
case NSRoundBankers:roundingFunction = &roundf; break;
}
CGFloat scale = [[UIScreen mainScreen] scale];
CGFloat result = roundingFunction(value * scale) / scale;
@steipete
steipete / PSPDFUIKitMainThreadGuard.m
Last active July 26, 2026 21:05
This is a guard that tracks down UIKit access on threads other than main. This snippet is taken from the commercial iOS PDF framework http://pspdfkit.com, but relicensed under MIT. Works because a lot of calls internally call setNeedsDisplay or setNeedsLayout. Won't catch everything, but it's very lightweight and usually does the job.You might n…
// 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>
@lexrus
lexrus / HD.txt
Last active July 20, 2023 08:11
All WWDC 2013 Session Videos URLs in https://developer.apple.com/wwdc/videos/ dumped with Chrome. You can download these videos **without** a Apple developer account by running the download.sh script. There is also a sample code downloader here: https://github.com/jfahrenkrug/WWDC-Downloader
http://devstreaming.apple.com/videos/wwdc/2013/710xfx3xn8197k4i9s2rvyb/710/710-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/202xdx2x47ezp1wein/202/202-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/200xdx2x35e1pxiinm/200/200-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/413xdx5x97itb5ek4yex3r7/413/413-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/612xax4xx65z1ervy5np1qb/612/612-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/221xex4xxohbllf4hblyngt/221/221-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/220xbx4xipaxfd1tggxuoib/220/220-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/711xcx4x8yuutk8sady6t9f/711/711-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/404xbx2xvp1eaaqonr8zokm/404/404-HD.mov?dl=1
http://devstreaming.apple.com/videos/wwdc/2013/505xbx4xrgmhwby4oiwkrpp/505/505-HD.mov?dl=1