trojanfoe’s gists

trojanfoe / NSArray unrecognized selector exception

Last active December 22, 2015 03:29

NSMutableArray from NSArray copy

	#import <Foundation/Foundation.h>

	int main(int argc, const char **argv) {
	@autoreleasepool {
	NSMutableArray *mutableArray;
	NSString *str = @"one two three";
	mutableArray = [[str componentsSeparatedByString:@" "] copy];
	[mutableArray addObject:@"four"];
	for (NSString *s in mutableArray) {
	NSLog(@"%@", s);

trojanfoe / RAII-style Objective-C class

Last active March 26, 2019 15:49

Test of RAII-style Objective-C class. See: http://stackoverflow.com/questions/19551973/will-this-raii-style-objective-c-class-work

	$ cat locktest.m
	#import <Foundation/Foundation.h>

	@interface Locker : NSObject {
	NSRecursiveLock *_lock;
	}
	- (void)setLock:(NSRecursiveLock *)lock;
	@end

	@implementation Locker

trojanfoe / dateiter.m

Last active January 3, 2016 11:09

Objective-C NSDate example of checking how many times a day-of-the-month appears between two dates. See: http://stackoverflow.com/questions/21161125/how-many-times-a-specific-day-has-passed-between-two-dates Compile with: clang -g -o dateiter dateiter.m -fobjc-arc -framework Foundation

	#import <Foundation/Foundation.h>

	static void nextMonth(NSDateComponents *comps) {
	NSInteger month = [comps month];
	if (month == 12) {
	[comps setYear:[comps year] + 1];
	[comps setMonth:1];
	} else {
	[comps setMonth:month + 1];
	}

trojanfoe / CallByRef.m

Last active January 3, 2016 23:29

	#import <Foundation/Foundation.h>

	@interface ClassA : NSObject

	@property NSMutableString *string;

	- (void)changeString;
	- (void)printString;

	@end

trojanfoe / Output

Last active January 4, 2016 00:29

	2014-01-21 14:57:39.317 getifaddrs[31705:707] name=lo0, family=30, address=fe80::1
	2014-01-21 14:57:39.319 getifaddrs[31705:707] name=lo0, family=2, address=127.0.0.1
	2014-01-21 14:57:39.319 getifaddrs[31705:707] name=lo0, family=30, address=::1
	2014-01-21 14:57:39.320 getifaddrs[31705:707] name=en1, family=30, address=fe80::fa1a:67ff:fe0e:30eb
	2014-01-21 14:57:39.320 getifaddrs[31705:707] name=en1, family=2, address=192.168.1.100

trojanfoe / Compilation and running

Created February 20, 2014 11:50

Sleeping for a set period of time while running the runloop

	$ clang -DDEBUG=1 -g -fobjc-arc -o rlsleep rlsleep.m -framework Foundation
	$ ./rlsleep
	2014-02-20 11:45:36.481 rlsleep[95410:707] Before 2014-02-20 11:45:36 +0000
	2014-02-20 11:45:37.475 rlsleep[95410:707] Tick
	2014-02-20 11:45:38.476 rlsleep[95410:707] Tick
	2014-02-20 11:45:39.475 rlsleep[95410:707] Tick
	2014-02-20 11:45:40.475 rlsleep[95410:707] Tick
	2014-02-20 11:45:41.475 rlsleep[95410:707] Tick
	2014-02-20 11:45:42.476 rlsleep[95410:707] Tick
	2014-02-20 11:45:43.476 rlsleep[95410:707] Tick

trojanfoe / vslice.py

Last active August 29, 2015 13:56

Python script to split an image into vertical slices. Useful for processing background images (i.e. cocos2d, etc.)

	#!/usr/bin/env python
	#
	# Slice an image into the specified number of vertical slices.
	#
	# Usage: vslice.py [options] image output-path num-slices
	# Use --help for a list of options.
	#
	# Andy Duplain <[email protected]> 26-Feb-2014
	#

trojanfoe / osstatus.m

Created May 17, 2014 06:46

Print the meaning of an OSX OSStatus code value

	#import <Foundation/Foundation.h>
	#import <CoreServices/CoreServices.h>

	int main(int argc, const char **argv)
	{
	@autoreleasepool {
	for (int i = 1; i < argc; i++) {
	char *endp;
	long value = strtol(argv[i], &endp, 10);
	if (*endp == '\0') {

trojanfoe / Test results

Last active August 29, 2015 14:05

Demonstrate changing the directory to the executable's path using C++

	--- Source/cpptinkering ‹master*➔ ?› » make
	clang++ -DDEBUG=1 -g -Wall -std=c++11 -stdlib=libc++ -o setcwd setcwd.cpp -lstdc++
	--- Source/cpptinkering ‹master*➔ ?› » ./setcwd
	Changing to directory '.'
	This is a one.
	This is line two.
	This is line three.
	--- Source/cpptinkering ‹master*➔ ?› » cd /
	--- / » /Users/andy/Source/cpptinkering/setcwd
	Changing to directory '/Users/andy/Source/cpptinkering'

trojanfoe / build-png.sh

Created September 4, 2014 20:24

Script to build libpng for iOS

	#!/bin/sh

	dobuild=1
	docopy=1
	doclean=1
	version=1.6.9
	srcdir=libpng-${version}
	srcfile=${srcdir}.tar.gz
	srctarball=http://sourceforge.net/projects/libpng/files/libpng16/${version}/${srcfile}/download
	outdir=$(cd ../external-deps/png; pwd)

Andy Duplain trojanfoe