zshell31

Type classes

Type classes have some advantages over Java style interfaces. One advantage is the ability to implement functions that do not need to take in an instance of the interface.

For example, (FromString v) takes in a String and returns v, and it doesn't have to take v as a parameter.

Microsoft Visual C++ 2005 Redistributable Package (x64)

Microsoft Visual C++ 2005 Redistributable Package (x86)

Microsoft Visual C++ 2005 SP1 Redistributable Package (x86)

Microsoft Visual C++ 2005 SP1 Redistributable Package (x64)

Microsoft Visual C++ 2008 Redistributable Package (x64)

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

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

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

	# AWS specific install of Docker
	sudo yum update -y
	sudo yum install -y docker
	sudo service docker start
	sudo usermod -a -G docker ec2-user

	# exit the SSH session, login again

	# Docker
	docker run -d --hostname my-rabbit --name some-rabbit -p 4369:4369 -p 5671:5671 -p 5672:5672 -p 15672:15672 rabbitmq

	<?php namespace App\Http\Controllers\Api\V1;

	use App\Http\Controllers\Controller;
	use App\Http\Requests;
	use Illuminate\Http\Request;
	use Tymon\JWTAuth\Facades\JWTAuth;
	use Tymon\JWTAuth\Exceptions\JWTException;

	class AuthenticateController extends Controller
	{

	use std::rc::Rc;

	trait HKT<U> {
	type C; // Current type
	type T; // Type with C swapped with U
	}

	macro_rules! derive_hkt {
	($t:ident) => {
	impl<T, U> HKT<U> for $t<T> {

	var webpack = require('webpack');
	var HtmlWebpackPlugin = require('html-webpack-plugin');
	var path = require('path');
	var folders = {
	APP: path.resolve(__dirname, '../app'),
	BUILD: path.resolve(__dirname, '../build'),
	BOWER: path.resolve(__dirname, '../bower_components'),
	NPM: path.resolve(__dirname, '../node_modules')
	};