Syrus Akbary syrusakbary

Easy parallel python with concurrent.futures

As of version 3.3, python includes the very promising concurrent.futures module, with elegant context managers for running tasks concurrently. Thanks to the simple and consistent interface you can use both threads and processes with minimal effort.

For most CPU bound tasks - anything that is heavy number crunching - you want your program to use all the CPUs in your PC. The simplest way to get a CPU bound task to run in parallel is to use the ProcessPoolExecutor, which will create enough sub-processes to keep all your CPUs busy.

We use the context manager thusly:

with concurrent.futures.ProcessPoolExecutor() as executor:

CSS Layout Debugger

A tweet-sized debugger for visualizing your CSS layouts. Outlines every DOM element on your page a random (valid) CSS hex color.

One-line version to paste in your DevTools

Use $$ if your browser aliases it:

~ 108 byte version

React Donut Chart SVG Component

A Pen by Elijah Manor on CodePen.

License.

In some cases for Python unit tests, we want to automatically perform setUp methods in as declared in a base class. However, we still want setUp to work as per normal in the subclass. The following code will proxy the new setUp function to run it's base class' and the new one.

# Define a common test base for starting servers
class MyBaseTestCase(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        """On inherited classes, run our `setUp` method"""
        # Inspired via http://stackoverflow.com/questions/1323455/python-unit-test-with-base-and-sub-class/17696807#17696807
        if cls is not MyBaseTestCase and cls.setUp is not MyBaseTestCase.setUp:

	//-----------------------------------------------
	// SPARK CORE CUSTOM PWM FREQUENCY EXAMPLE
	//===============================================
	// Define your own frequency below!
	// PWM Glitch issue fixed, only sets up PWM once,
	// ... thereafter sets duty cycle.
	// This allows true 0 - 100% PWM.
	// Copy this into a new application at:
	// https://www.spark.io/build and go nuts!
	//-----------------------------------------------

	#!/usr/bin/python

	# Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford ([email protected])
	# The author disclaims copyright to this source code.

	import sys
	import struct
	import socket
	import time
	import select

	void setup() {
	}

	void loop(){
	unsigned int ir[] = {8576,4224,640,1664,640,640,640,640,640,640,640,1664,640,640,640,640,640,640,640,640,640,640,
	640,640,640,640,640,640,640,1664,640,640,640,640,640,1664,640,640,640,640,640,640,640,640,
	640,640,640,640,640,640,640,1664,640,1664,640,640,640,640,640};

	send (ir, 59, 36000);
	}

	/global $,localStorage/
	$.fn.draft = function () {
	'use strict';

	if (!localStorage) {
	return;
	}

	var form = $(this),
	fields = form.find('input,select,textarea'),

	# Initialize the scroll
	page = es.search(
	index = 'yourIndex',
	doc_type = 'yourType',
	scroll = '2m',
	search_type = 'scan',
	size = 1000,
	body = {
	# Your query's body
	})

	'use strict';

	var React = require('react-native');
	var {
	Bundler,
	StyleSheet,
	Text,
	TouchableHighlight,
	View,
	ScrollView,