Skip to content

Instantly share code, notes, and snippets.

@jpwatts
jpwatts / mac-homebrew-pyexiv2.sh
Created February 10, 2011 00:33
In which I finally get pyexiv2 working on my Mac using Homebrew and a series of disgusting hacks
#!/bin/sh
brew install python boost exiv2
curl -O http://launchpadlibrarian.net/61465005/pyexiv2-0.3.0.tar.bz2
tar xjvf pyexiv2-0.3.0.tar.bz2
cd pyexiv2-0.3.0
# https://answers.launchpad.net/pyexiv2/+question/140742
echo "env['FRAMEWORKS'] += ['Python']" >> src/SConscript
@pk
pk / ExampleTest.m
Created June 21, 2011 15:00
Using method swizzling and blocks to test Class methods in Objective-C.
#import "SenTestCase+MethodSwizzling.m"
@interface ExampleTest : SenTestCase {}
+ (BOOL)trueMethod;
+ (BOOL)falseMethod;
@end
@implementation ExampleTest
+ (BOOL)trueMethod { return YES; }
@jboner
jboner / latency.txt
Last active July 23, 2024 14:12
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
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

@dergachev
dergachev / GIF-Screencast-OSX.md
Last active July 17, 2024 14:20
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:

@alloy
alloy / gist:4952606
Last active August 19, 2020 03:48
Upload iOS application for clients on their iTunes Connect account.

Obviously, the simplest solution would be for the client to share their account details or add us as ‘team admin’, but that is not what this is about.

  1. [Add us to your iOS Developer Program as ‘team member’.][1]
  2. [Create a ‘Distribution Certificate’, if you haven’t got one already.][2]
  3. [Create a ‘App Store Distribution Provisioning Profile’.][3]
  4. [Export the ‘Distribution Certificate’ assets and send the export and password to us.][4] (For security sake, it’s a good idea to send us the password via other means than the exported certificate. E.g. by phone/SMS.)
@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' | \
@steventroughtonsmith
steventroughtonsmith / gist:6763213
Created September 30, 2013 12:39
Non-opaque application windows in iOS 7, with optional blur. Shows the user's wallpaper under the app, with Parallax if supported.
typedef enum _UIBackgroundStyle {
UIBackgroundStyleDefault,
UIBackgroundStyleTransparent,
UIBackgroundStyleLightBlur,
UIBackgroundStyleDarkBlur,
UIBackgroundStyleDarkTranslucent
} UIBackgroundStyle;
@interface UIApplication (UIBackgroundStyle)
-(void)_setBackgroundStyle:(UIBackgroundStyle)style;
@derhuerst
derhuerst / _.md
Last active June 9, 2024 10:05
List of HAFAS API Endpoints
@gene1wood
gene1wood / all_aws_lambda_modules_python.md
Last active July 19, 2024 17:32
AWS Lambda function to list all available Python modules for Python 2.7 3.6 and 3.7