xem

Conventions

• A = [xA, yA] is a point on the 2D plane. Same for B, C, ...
• lengths are in any unit (ex: pixels)
• code snippets are in JavaScript

Degrees to radians

angleRad = angleDeg * Math.PI / 180;

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

miguelcma

/* DeviceUID.h
#import <Foundation/Foundation.h>

@interface DeviceUID : NSObject
+ (NSString *)uid;
@end
*/


// Device.m

tomazzaman

check process hhvm with pidfile /var/run/hhvm/pid
  group hhvm
  start program = "/usr/sbin/service hhvm start" with timeout 60 seconds
  stop program  = "/usr/sbin/service hhvm stop"
  if failed unixsocket /var/run/hhvm/hhvm.sock then restart
  if mem > 400.0 MB for 1 cycles then restart
  if 5 restarts with 5 cycles then timeout

wschenk

#!/usr/bin/env ruby -KU
#
# This code has been adapted from
# https://github.com/google/google-api-ruby-client-samples/tree/master/drive
#

require 'thor'
require 'hirb'
require 'google/api_client'
require 'google/api_client/client_secrets'

jstart

LAContext *myContext = [[LAContext alloc] init];
NSError *authError = nil;
NSString *myLocalizedReasonString = @"Authenticate using your finger";
if ([myContext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&authError]) {
   [myContext evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics
                 localizedReason:myLocalizedReasonString
                           reply:^(BOOL success, NSError *error) {
                               if (success) {
                                   NSLog(@"User is authenticated successfully");
                               } else {

ck-on

<?php
/*
HHVMinfo - phpinfo page for HHVM HipHop Virtual Machine
Author: _ck_
License: WTFPL, free for any kind of use or modification,  I am not responsible for anything, please share your improvements
Version: 0.0.6

* revision history
0.0.6  2014-08-02  display fix for empty vs zero 
0.0.5  2014-07-31  try to determine config file from process command line (may not always work), style improvements

gerard-kanters

;extension = /usr/lib64/php/modules/geoip.so

hhvm.pid_file = "/var/run/hhvm/hhvm.pid"
hhvm.server.port = 9000
hhvm.server.fix_path_info = true
hhvm.server.type = fastcgi
hhvm.server.enable_magic_quotes_gpc = false
hhvm.server.enable_keep_alive = true
hhvm.server.enable_ssl = true
hhvm.log.access_log_default_format = "%h %l %u %t \"%r\" %>s %b"

pyk

become active record migration expert (Rails 4.0.2)

workflow:

create model

$ rails g model NameOfModel
    invoke  active_record
    create    db/migrate/YYYYMMDDHHMMSS_create_name_of_models.rb

booleanbetrayal

'use strict';

module.exports = function(grunt) {

    // load all grunt tasks
    require('matchdep').filterDev('grunt-*').forEach(grunt.loadNpmTasks);


    // configurable paths
    var paths = {