jhurliman

varying vec2 textureCoordinate;

uniform sampler2D inputImageTexture;

vec3 lab2xyz(vec3 c) {
    float fy = (c.x + 16.0) / 116.0;
    float fx = c.y / 500.0 + fy;
    float fz = fy - c.z / 200.0;
    
    return vec3( 95.047 * ((fx > 0.206897) ? fx * fx * fx : (fx - 16.0 / 116.0) / 7.787),

jhurliman

varying vec2 textureCoordinate;

uniform sampler2D inputImageTexture;

vec3 rgb2xyz(vec3 c) {
    vec3 tmp;
    tmp.x = (c.r > 0.04045) ? pow( (c.r + 0.055) / 1.055, 2.4) : c.r / 12.92;
    tmp.y = (c.g > 0.04045) ? pow( (c.g + 0.055) / 1.055, 2.4) : c.g / 12.92;
    tmp.z = (c.b > 0.04045) ? pow( (c.b + 0.055) / 1.055, 2.4) : c.b / 12.92;
    

jhurliman

// List all font families and font names in iOS
for (NSString *familyName in UIFont.familyNames) {
    NSLog(@"%@", familyName);
    for (NSString *fontName in [UIFont fontNamesForFamilyName:familyName]) {
        NSLog(@"    %@", fontName);
    }
}

jhurliman

//
//  UIViewController+SegueData.h
//  SegueDataPassing - Helper method for performing a segue and passing data to
//                     the destination view controller.
//
//  Created by John Hurliman on 10/21/14.
//  Copyright (c) 2014 John Hurliman. Released under the MIT license.
//  http://opensource.org/licenses/MIT
//

jhurliman

## for (int i = 0; i < 10; i++) { }

LBL1:
  cmpl  $10, -4(%ebp)             ## -4(%ebp) is the stack address of i. Check if it is less than 10
  jge LBL3                        ## If the previous compare had a greater than or equal to result, exit the loop
  jmp LBL2                        ## Otherwise, jump to the next address (this instruction will get optimized away)
LBL2:
  movl  -4(%ebp), %eax            ## Load i into the EAX register (where the arithmetic happens!)
  addl  $1, %eax                  ## Add 1 to the EAX register
  movl  %eax, -4(%ebp)            ## Copy the EAX register back on to the stack at the address for i.

jhurliman

const char *s;      // read as "s is a pointer to a char that is constant"
char c;
char *const t = &c; // read as "t is a constant pointer to a char"

jhurliman

#ifdef DEBUG
    #define kAPIEndpointHost @"http://example.dev"
#else
    #define kAPIEndpointHost @"http://www.example.com"
#endif

#define kAPIEndpointLatest          (kAPIEndpointHost @"/api/latest_content")
#define kAPIEndpointMostPopular     (kAPIEndpointHost @"/api/most_popular")

jhurliman

- (id)init
{
    if (self = [super init]) {
	}
	return self;
}

jhurliman

+ (instancetype)sharedInstance {
    static id instance;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [[self alloc] init];
    });
    return instance;
}

jhurliman

import UIKit
import CoreLocation

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, CLLocationManagerDelegate {
    
    var window: UIWindow?
    let locationManager: CLLocationManager = CLLocationManager()
    
    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {