wjlafrance

WORKSPACE = "MyAwesomeProject.xcworkspace"
SCHEME = "MyAwesomeProjectScheme"
CONFIGURATION = debug
TARGET_BUILD_DIR = ./build
BINARY = $(TARGET_BUILD_DIR)/MyAwesomeProject.app
IPA = MyAwesomeProject.ipa

# fill in from https://testflightapp.com/api/doc/
TF_API_TOKEN = ''
TF_TEAM_TOKEN = ''

wjlafrance

    NSString *uuid = [[NSUserDefaults standardUserDefaults] stringForKey:@"CFUUID"];
    if (!uuid) {
        CFUUIDRef cfuuid = CFUUIDCreate(NULL);
        uuid = [(NSString *)CFUUIDCreateString(NULL, cfuuid) autorelease];
        
        [[NSUserDefaults standardUserDefaults] setValue:uuid forKey:@"CFUUID"];
        [[NSUserDefaults standardUserDefaults] synchronize];
        
        CFRelease(cfuuid);
    }

wjlafrance

//Slow:
int r = (pixels[i] & 0x00FF0000 >> 16) * -1 + 255;
int b = (pixels[i] & 0x0000FF00 >>  8) * -1 + 255;
int g = (pixels[i] & 0x000000FF)       * -1 + 255;
pixels[i] = r << 16 | b << 8 | g;

//Fast:
pixels[i] ^= 0x00FFFFFF;

wjlafrance

total=`sysctl hw.memsize | awk '{print $2}'`
total=`echo $total / 1024 | bc`

physmem=`top -l 1| grep PhysMem: | sed s/M/*1024/g`

#wired=`   echo $physmem | awk '{print $2}'  | bc`
#active=`  echo $physmem | awk '{print $4}'  | bc`
#inactive=`echo $physmem | awk '{print $6}'  | bc`
used=`    echo $physmem | awk '{print $8}'  | bc`
free=`    echo $physmem | awk '{print $10}' | bc`

wjlafrance

//
//  ExternalViewController.m
//
//  Created by William LaFrance.
//  Public Domain
//

#import "ExternalViewController.h"

@interface ExternalViewController ()

wjlafrance

Memory management in C

	void *malloc(size_t size);
		Allocates size bytes of memory

	void *calloc(size_t count, size_t size);
		Allocate count times size

	void *realloc(void *ptr, size_t size);
		malloc's size, copies memory, frees old pointer

wjlafrance

    Class newClass = NSClassFromString(@"UINewClassThatYouCantHave");
    if (newClass) {
        NSLog(@"We're on an iOS that has the new class");
        id newObject = [[newClass alloc] init];
        if ([self respondsToSelector:@selector(selectorThatUsesNewObject:)])
            [self performSelector:@selector(selectorThatUsesNewObject:) withObject:newObject];
    } else {
        NSLog(@"Class doesn't exist!");
    }

wjlafrance

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>

struct SObject
{
  uint32_t retainCount;
  void *buffer;
};

wjlafrance

jruby-1.6.7.2 :014 > multiplier = 1.0 / 3.0
 => 0.333333333333333 
jruby-1.6.7.2 :015 > multiplier * 3
 => 1.0 

wjlafrance

# list largest files on your hard drive, down to a certain depth, ordered by size
find / -type f -maxdepth 3 -exec du {} \; | sort -n -r > ~/usage.txt