Yury Timofeev y-gagar1n

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

Currently considering https://github.com/webdriverio/webdrivercss

Core Goals:

Can test in up-to-date versions of all major browsers
Can test on up-to-date versions of all major OSes
Can test in IE9 (because Bootstrap v4 will support IE9+)
Don't want to have to setup/maintain our own cluster of VMs running all the necessary OSes (and all the versions of Windows)
Workflow for management of reference/baseline/norm screenshots

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

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How to install PhantomJS on Ubuntu

Version: 1.9.8

Platform: x86_64

First, install or update to the latest system software.

sudo apt-get update
sudo apt-get install build-essential chrpath libssl-dev libxft-dev

Problem: What does a Modern Front-End Development Workflow Look Like?

I want to start writing libraries and large applications using the JavaScript language. However, I don't know how to setup the project and which build tools to use. What I do know is that the JavaScript community has moved way beyond using browser developer tool plugins and strategically-placed console.log() statements to debug, test, and build code.

I need help.

Below, I will keep track of articles, tutorials and tools I come across as I search for a way to bring my front-end development chops up-to-date.

	Latency Comparison Numbers
	--------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	/**
	* Test if idle probes are blocking or not.
	*
	* Build dynamic pipeline made of a videotestsrc and an autovideosink,
	* and add/remove a dummy idle probe (print a message) every 5 seconds.
	*
	* Probes of type GST_PAD_PROBE_TYPE_IDLE are described as blocking
	* in the design documents [1] and the reference documentation [2],
	* so that they block the pad until the probe is removed.
	* But it seems that they just block the pad during the execution of the

	#!/usr/bin/python
	# -- coding: utf-8 --

	import web, json, time, mpd, collections

	STATIONS = {
	"FoxNews" : "mmsh://209.107.209.181:80/D/138/13873/v0001/reflector:24137?MSWMExt=.asf",
	"Classic" : "http://radio02-cn03.akadostream.ru:8100/classic128.mp3",
	"Jazz": "http://streaming208.radionomy.com:80/A-JAZZ-FM-WEB"
	}

	using System;
	using System.Collections.Generic;
	using System.Runtime.InteropServices;
	using System.Diagnostics;
	using System.Text;
	using System.Threading;

	namespace FileLockInfo
	{
	public class Win32Processes

	param ($InstallPath, $ToolsPath, $Package, $Project)

	Add-Type -Language CSharpVersion3 -TypeDefinition @'
	public class MyPackage {
	public static void Execute(string installPath, string toolsPath, object package, object Project) {
	// implement Nuget init, install, uninstall script as C#
	System.Console.WriteLine(installPath);
	}
	}
	'@