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@lukeredpath
lukeredpath / ExampleClass.m
Created June 30, 2011 22:18
Macro for creating your "shared instance" using GCD
@implementation MySharedThing
+ (id)sharedInstance
{
DEFINE_SHARED_INSTANCE_USING_BLOCK(^{
return [[self alloc] init];
});
}
@end
@wki
wki / css_parser.pl
Created December 22, 2011 19:48
Sample CSS Parser using Marpa::XS
use strict;
use warnings;
use feature ':5.10';
use Marpa::XS;
use Data::Dumper;
#
# a simple CSS snippet for testing
#
my $text = q{
@jboner
jboner / latency.txt
Last active July 23, 2024 14:12
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@ridiculousfish
ridiculousfish / SafeSet.m
Created June 26, 2012 09:22
A thread safe set written in Objective-C
#import <Foundation/Foundation.h>
@interface SafeSet : NSObject {
NSMutableSet *set;
dispatch_queue_t queue;
}
@end
@implementation SafeSet
@ridiculousfish
ridiculousfish / gist:3729531
Created September 15, 2012 20:06
A (buggy) thread safe set written in Go
package main
import (
"fmt"
)
type SetTest struct {
val string
result chan bool
}
@dctrwatson
dctrwatson / commit_diff.sh
Last active April 9, 2024 20:50
Update Phabricator diff depending on build status
BASE_COMMIT=$(echo {\"diff_id\": ${DIFF_ID}} | arc call-conduit differential.getdiff | awk -v RS=',' -v FS=':' '$1~/\"sourceControlBaseRevision\"/ {print $2}' | tr -d \")
# Update repo (can be taken care of by jenkins too)
git fetch --all
git remote prune origin
# We only want to test the diff so reset to base
git reset --hard ${BASE_COMMIT}
git clean -fdx
@jarsen
jarsen / NSArrayMagic.m
Last active July 24, 2018 09:22
How to do lots of cool things with NSArray. Inspired by NSHipster and WWDC 2013 Session 228 - "Hidden Gems in Cocoa and Cocoa Touch"
NSArray *albums = @[[Album albumWithName:@"Random Access Memories" price:9.99f],
[Album albumWithName:@"Clarity" price:6.99f],
[Album albumWithName:@"Weekend in America" price:7.99f],
[Album albumWithName:@"Weekend in America" price:7.90f],
[Album albumWithName:@"Bangarang EP" price:2.99f]];
// Reversing an Array
__unused NSArray *reversed = albums.reverseObjectEnumerator.allObjects;
// PREDICATES
@trinitronx
trinitronx / xcode-cli-tools.sh
Last active January 18, 2024 05:20
Script to download & install XCode Command Line tools on OSX 10.7 or 10.8. Lifted from jedi4ever/veewee template.
#!/bin/sh
# 2021-12-09:
# This script is no longer supported!
# Apple broke all direct downloads without logging with an Apple ID first.
# The number of hoops that a script would need to jump through to login,
# store cookies, and download is prohibitive.
# Now we all must manually download and mirror the files for this to work at all :'-(
OSX_VERS=$(sw_vers -productVersion | awk -F "." '{print $2}')
import lldb
import re
import shlex
# This script allows Xcode to selectively ignore Obj-C exceptions
# based on any selector on the NSException instance
def getRegister(target):
if target.triple.startswith('x86_64'):
return "rdi"
@danielpunkass
danielpunkass / fsa.py
Last active July 22, 2018 02:50
A simple lldb module for adding an "fsa" command to inject F-Script anywhere into any process
"""
Automate loading of F-Script Anywhere into any app.
By Daniel Jalkut - @danielpunkass - http://indiestack.com/
To set up:
0. Make sure you have FScript.framework installed in /Library/Frameworks (http://www.fscript.org)
1. Copy this script to ~/.lldb/fsa.py
2. Add the following to your ~/.lldbinit file: