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@jboner
jboner / latency.txt
Last active June 21, 2024 04:31
Latency Numbers Every Programmer Should Know
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
@adamgit
adamgit / .gitignore
Last active June 2, 2024 09:58
.gitignore file for Xcode4 / OS X Source projects
#########################
# .gitignore file for Xcode4 and Xcode5 Source projects
#
# Apple bugs, waiting for Apple to fix/respond:
#
# 15564624 - what does the xccheckout file in Xcode5 do? Where's the documentation?
#
# Version 2.6
# For latest version, see: http://stackoverflow.com/questions/49478/git-ignore-file-for-xcode-projects
#
@OliverLetterer
OliverLetterer / XCDUUID.m
Created January 26, 2013 17:05
With this gist, I, as a total assembly noob, am trying to understand the XCDUUID runtime hack (https://github.com/0xced/NSUUID/blob/1.0.1/NSUUID.m#L167-L221) to be able to use NSUUID on iOS < 6.0.
@implementation XCDUUID
+ (void) load
{
// query runtime if NSUUID class already exists, if so => done
if (objc_getClass("NSUUID"))
{
return;
}
@mattt
mattt / uiappearance-selector.md
Last active June 4, 2024 13:28
A list of methods and properties conforming to `UIAppearance` as of iOS 12 Beta 3

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \
@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
@hpique
hpique / iOS7-notifications.h
Last active January 29, 2018 14:19
List of all public notifications available in iOS 7.0 (or at least those whose constants are properly named).
// Developer/Library/Frameworks/SenTestingKit.framework/Headers/SenTestCaseRun.h
SENTEST_EXPORT NSString * const SenTestCaseDidStartNotification;
SENTEST_EXPORT NSString * const SenTestCaseDidStopNotification;
SENTEST_EXPORT NSString * const SenTestCaseDidFailNotification;
// Developer/Library/Frameworks/SenTestingKit.framework/Headers/SenTestDistributedNotifier.h
SENTEST_EXPORT NSString * const SenTestNotificationIdentifierKey;
// Developer/Library/Frameworks/SenTestingKit.framework/Headers/SenTestSuiteRun.h
SENTEST_EXPORT NSString * const SenTestSuiteDidStartNotification;
@iAladdin
iAladdin / wwdc-2014-extractor
Last active April 26, 2019 01:27
WWDC 2014 Sessions Video URL Extractor
//please execute this script on https://developer.apple.com/videos/wwdc/2014/
//inspect this page and run it on console
jQuery(".download a:contains('HD')").each(function(n){ console.log(jQuery(this).attr("href"))})
jQuery(".download a:contains('SD')").each(function(n){ console.log(jQuery(this).attr("href"))})
jQuery(".download a:contains('PDF')").each(function(n){ console.log(jQuery(this).attr("href"))})
@iamsk
iamsk / doubangroupapi
Created September 2, 2014 12:15
import requests
from db import db
"""
The Douban Group API which not display on http://developers.douban.com/wiki/?title=api_v2
Base url: https://api.douban.com/v2
Group info: /group/:id
@ksm
ksm / gist:da1dd59f38babe929c44
Created November 23, 2014 12:57
Allow a view to capture touches while it is animating (e.g. for interactive animations and transitions)
// Presentation Layer Hit Test
// Source: WWDC2014 Session 236
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
CGPoint pointInSuperview = [self convertPoint:point toView:self.superview];
CGPoint presentationLayerPoint = [self.layer.presentationLayer convertPoint:pointInSuperview fromLayer:self.superview.layer];
return [super hitTest:presentationLayerPoint withEvent:event];
}
@genadyo
genadyo / gist:295a5e8f0d743f57137f
Created November 27, 2014 17:21
app_store_app_data.json
{
"491289025" : "ijinshan-kappmarket://",
"301521403" : "fb103361823069955://",
"492178411" : "ils492178411://",
"346142396" : "fb234434003713://",
"310633997" : "whatsapp://",
"370614765" : "com.condenet.newyorker://",
"325058491" : "rnmddisco://",
"382952264" : "epichttp://",
"477048487" : "predictwind://",