Skip to content

Instantly share code, notes, and snippets.

@darkseed
darkseed / Reachability.h
Created August 30, 2011 23:16 — forked from dhoerl/Reachability.h
Reachability (iOS) ARCified
/*
File: Reachability.h
Abstract: Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
Version: 2.2 - ARCified
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
@boctor
boctor / BaseViewController.m
Created May 5, 2011 02:08
A base view controller class that when running on the simulator in debug mode, will auto simulate a memory warning every time the view controller's viewDidAppear is called
//
// BaseViewController.m
//
// Created by Peter Boctor on 5/4/11.
//
// Copyright (c) 2011 Peter Boctor
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
@rsms
rsms / KVOChangeScope.hh
Created November 25, 2010 01:24
Conveniently mark Key-Value Observable properties as edited in Objective-C++
/*
* KVOChangeScope -- Conveniently mark edits for Key-Value Observations in
* Objective-C++ in custom setters.
*
* Example:
*
* - (void)setFoo:(id)value {
* kvo_scoped_change(foo);
* // your setter code here which might return at any moment
* }
@rsms
rsms / sleeping-barber.m
Created November 10, 2010 19:04
Sleeping barber with GCD (Grand Central Dispatch)
int main (int argc, const char * argv[]) {
dispatch_queue_t waitingChairs = dispatch_queue_create("waitingChairs", 0);
dispatch_queue_t barber = dispatch_queue_create("barber", 0);
dispatch_semaphore_t semaphore = dispatch_semaphore_create(3);
NSInteger ident = 0;
while (++ident) {
if (dispatch_semaphore_wait(semaphore, DISPATCH_TIME_NOW) != 0) {
printf("Customer %d turned away\n", ident);
continue;
}