macu’s gists

macu / vslice.py

Created March 13, 2014 02:29

Simplifies using avconv to slice out part of a video

	#!/usr/bin/env python

	import sys
	from operator import sub
	from subprocess import call

	def parseTime(s):
	parts = s.split(':')
	if len(parts) == 2:
	parts.insert(0, 0)

macu / $children.js

Created March 27, 2014 02:22

Like jQuery's "closest" but for children, depending on a selector that matches the desired parent.

	var $container = $(this);
	var $children = $this.find('.some-criteria').filter(function() {
	return $(this).closest('.my-criteria').is($container);
	});

macu / ember-cucumber.rb

Last active August 29, 2015 14:01

Helpers for testing Ember applications using Cucumber and Watir

	# coding: UTF-8

	module PatientlyHelper
	def patiently(seconds=5, &block)
	start_time = Time.now
	begin
	block.call
	rescue Exception => e
	raise e if (Time.now - start_time) >= seconds
	sleep(0.05)

macu / ember-generate-properties.html

Created June 13, 2014 17:36

Example of dynamically generating properties on objects, demonstrating that the bindings work as expected.

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>EmberJS demo</title>

	<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.js"></script>
	<script src="//cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.3.0/handlebars.js"></script>
	<script src="//cdnjs.cloudflare.com/ajax/libs/ember.js/1.5.1/ember.min.js"></script>

macu / ember-model-clone.js

Last active August 29, 2015 14:03

Reopen the Model class, to allow cloning records with overrides.

	import Ember from 'ember';
	import DS from 'ember-data';

	/**
	* Returns the model class name, dasherized, which can be used to find
	* and create new models of the same type through the store.
	*/
	export function getClassName(model) {
	// typeKey introduced in Ember Data 1.0.0.beta.3
	var typeKey = model.constructor.typeKey;

macu / pluralize.js

Created August 11, 2014 19:19

Ember pluralize helper

	import { Handlebars } from 'ember';

	// Thanks for the inspiration: https://coderwall.com/p/ryo_3w
	Handlebars.registerBoundHelper('pluralize', function(number, options) {
	var phrase = options.hash.phrase \|\| '{\|s}';
	return phrase.replace(/\{(.?)\\|(.?)\}/, function(match, singular, plural) {
	return number == 1 ? singular : plural;
	});
	});

macu / RWSync.swift

Last active August 29, 2015 14:05

Simple utility for executing synchronous code in concurrent read/write blocks. Thanks to "Mastering Grand Central Dispatch" from WWDC 2011: https://developer.apple.com/videos/wwdc/2011/?id=210

	/// RWSync provides methods for executing read/write blocks through the Grand Central Dispatch.
	/// Multiple reads may execute concurrently, but a write will block all other executions in the queue.
	class RWSync {

	private let queue: dispatch_queue_t

	/// Instantiates RWSync with a new concurrent queue.
	init() {
	let queueName = "rwsync.\(mach_absolute_time())"
	self.queue = dispatch_queue_create(queueName, DISPATCH_QUEUE_CONCURRENT)

macu / AtomicBoolean.swift

Created August 21, 2014 16:58

	class AtomicBoolean {

	private var val: Byte = 0

	/// Sets the value, and returns the previous value.
	/// The test/set is an atomic operation.
	func testAndSet(value: Bool) -> Bool {
	if value {
	return OSAtomicTestAndSet(0, &val)
	} else {

macu / IntDigits.swift

Created November 13, 2014 13:43

Method in Swift for extracting the digits from an integer. (Negative integers not supported.)

	extension Int {

	/// Returns the digits of the number in the given base.
	/// The array of digits is ordered from most to least significant.
	func digits(base: Int = 10) -> [Int] {
	if self < base {
	return [self]
	}
	var n = self
	var d: [Int] = []

macu / HexDump.swift

Created November 14, 2014 19:03

Hex dump NSData to String

	// Thanks http://www.swiftsoda.com/swift-coding/get-bytes-from-nsdata/
	func hexDump(data: NSData) -> String {
	var len = data.length
	var s = NSMutableString(capacity: len*2)
	var byteArray = [UInt8](count: len, repeatedValue: 0x0)
	data.getBytes(&byteArray, length:len)
	for v in byteArray {
	s.appendFormat("%02x", v)
	}
	return s

Matt Cudmore macu