jcayzac

// attempt 1
static BOOL isBeingDebugged()
{
    static BOOL cachedValue = NO;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        char buffer[2*MAXCOMLEN + 1];
        int len = proc_name(getppid(), buffer, 2*MAXCOMLEN);
        buffer[len] = 0;
        cachedValue = !strncmp(buffer, "debugserver", len);

jcayzac

// The problem: AFNetworking calls the operation's completion block asynchronously, so it breaks `-[NSOperation addDependency:]` order as the dependent is started *before* the dependency's completion block.

dispatch_semaphore_t sem = dispatch_semaphore_create(0);
__block NSOperation* blockOperation = nil;
void (^networkOperationHandler)(NSOperation *, id) = ^(NSOperation *operation, id __unused unused) {
    if (operation.cancelled)
    {
        NSLog(@"networkOperation: networkOperation cancelled!");
        [blockOperation cancel];
    }

jcayzac

NSData *msg = [@"This is a message" dataUsingEncoding:NSUTF8StringEncoding];
NSData *key = [@"the password" dataUsingEncoding:NSUTF8StringEncoding];

NSLog(@"Unencrypted message: [%@]", msg);


uint8_t iv[kCCBlockSizeAES128];
if (SecRandomCopyBytes(kSecRandomDefault, sizeof(iv), iv))
{
    // ERROR

jcayzac

#!/usr/bin/env bash
set -e -u -o pipefail

# Similar to git clone --shallow, except it creates a local shallow
# tag for every remote tag and doesn't clone any branch
#
# @param $1 [Required] Git remote
r="$1"
p="${r##*/}"
p="${p%.git*}.git"

jcayzac

module.exports = function(a, b) {
    const vA = /^(\d+)\.(\d+)(?:\.(\d+))?(.*)$/.exec(a),
          vB = /^(\d+)\.(\d+)(?:\.(\d+))?(.*)$/.exec(b)

    // Invalid version number go at the end
    if (vA == null) return -1
    if (vB == null) return 1

    // Numeric version components
    const nA = (vA[1] >>> 0) * 10000 + (vA[2] >>> 0) * 100 + (vA[3] >>> 0),

jcayzac

/**
 * Parse a string that contains minimal <b>...</b> HTML-like markup, and
 * returns an attributed string with those parts styled.
 *
 * This allows to localize attributed strings without having to serialize
 * RTF documents with set-in-stone styling.
 *
 * @param markup            Source string.
 * @param genericAttributes Generic attributes used for the whole string.
 * @param namedAttributes   A `NSictionary` whose keys are tag names (e.g. "b", "i", etc),

jcayzac

Yahoo CSV Quotes API

Request

Format

GET http://download.finance.yahoo.com/d/quotes.csv?f=<FIELDS>&s=<SYMBOL1,SYMBOL2,…>

Examples

$ curl 'http://download.finance.yahoo.com/d/quotes.csv?f=snl1d1t1ab&s=USDEUR=X,USDJPY=X'

"USDEUR=X","USD/EUR",0.8845,"6/11/2015","6:15am",0.8845,0.8845

jcayzac

NSData *provisioningProfile = nil;
NSData *raw = [NSData dataWithContentsOfURL:[NSBundle.mainBundle URLForResource:@"embedded" withExtension:@"mobileprovision"]];
char *start = memmem(raw.bytes,
                     raw.length,
                     "<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0",
                     47);
if (start) {
    char *end = memmem(start,
                       (uintptr_t)start - raw.length,
                       "</plist>",

jcayzac

// ES6 strftime(3) function that supports FDxcAaBbCdemuwYynt% for en_US only
// (only for dates, not datetimes)
Date.prototype.format = function(f) {
	const t=this,p=(v,f)=>v.toString().length==1?f+v:v,Y=t.getFullYear(),mo=t.getMonth()+1,dm=t.getDate(),u=t.getDay(),A=['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'][u%7],B=['January','February','March','April','May','June','July','August','September','October','November','December'][mo-1]
	return ['%Y-%m-%d','%m/%d/%y','%m/%d/%Y','%a %b %e %Y',A,A.slice(0,3),B,B.slice(0,3),Y/100|0,p(dm,'0'),p(dm,' '),p(mo,'0'),u,u%7,Y,Y%100,'\n','\t','%'].reduce((_, s, i)=>_.replace(new RegExp('%'+'FDxcAaBbCdemuwYynt%'[i],'g'),s),f)
}

// Unit tests
!() => {
var date = new Date('2016-04-02'), assert = require('assert')

jcayzac

#import "AppDelegate.h"

/*
 * Note our application delegate doesn't implement -applicationDidEnterBackground:, but it doesn't matter.
 */
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    NSLog(@"Original -application:didFinishLaunchingWithOptions: (self.class is %@)", self.class);
    return YES;
}