Matt Foxx FoxxMD

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

How you can help reduce `node_modules` bloat

This recent reddit thread reveals discontent among the web development community about the sheer volume of stuff in a typical node_modules dir. 140MB in this case!

Is it a design flaw in npm?

Opinions in the thread varied from "I'm surprised npm even works" to "everything is fine". I'm not going to offer an opinion, just these two observations:

node_modules dirs typically do contain lots of stuff that doesn't need to be there.
The latest version mitigates overall size by flattening the dependency tree, but some of the bloat is beyond npm's control.

What is the appeal of dynamically-typed languages?

Kris Nuttycombe asks:

I genuinely wish I understood the appeal of unityped languages better. Can someone who really knows both well-typed and unityped explain?

I think the terms well-typed and unityped are a bit of question-begging here (you might as well say good-typed versus bad-typed), so instead I will say statically-typed and dynamically-typed.

I'm going to approach this article using Scala to stand-in for static typing and Python for dynamic typing. I feel like I am credibly proficient both languages: I don't currently write a lot of Python, but I still have affection for the language, and have probably written hundreds of thousands of lines of Python code over the years.

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

	Use this as an example on how to start the virtual console without the need of Java Web Start or accessing it from the web interface.
	You can use the user and password that you use for the web interface.

	You need an old JRE... I used 1.7.0_80 from the Server JRE package, also I have tested successfully 1.7.0_79 with MacOS.
	You don't need to install it, just extract it or copy the files in "jre" folder.

	Open the viewer.jnlp file that you get by launching the virtual console from the web interface with a text editor.
	Note the urls to the jar files. Download the main jar file avctKVM.jar and the libs for your operating system and architecture.
	Extract the dlls (.so Linux, .jnilib MacOS) from the jar libs.

	#!/bin/sh

	# expects the following env vars
	# METRIC_PREFIX - At least the hostname to record these stats under in graphite - collectd.someserver
	# SNMP_HOST - the host to pull snmp stats from
	# CARBON_HOST - The carbon host to send the stats
	# CARBON_PORT - The carbon port to send the stats

	NOW="$(date +%s)"

	<?php

	namespace App\Http;

	use League\Fractal\Pagination\CursorInterface;
	use League\Fractal\Pagination\PaginatorInterface;
	use League\Fractal\Resource\ResourceInterface;
	use League\Fractal\Serializer\ArraySerializer;

	class Normalizr extends ArraySerializer

	{
	"lastfm": {
	"username": "ericboehs",
	"password": "secret",
	"api_key": "abc123",
	"api_secret": "xyz890"
	}
	}

	#!/bin/bash

	### Google Domains provides an API to update a DNS "Syntheitc record". This script
	### updates a record with the script-runner's public IP, as resolved using a DNS
	### lookup.
	###
	### Google Dynamic DNS: https://support.google.com/domains/answer/6147083
	### Synthetic Records: https://support.google.com/domains/answer/6069273

	USERNAME=""

	<templateSet group="JavaScript">
	<template name="us" value="'use strict'; $END$" description="Inserts 'use strict' statement" toReformat="true" toShortenFQNames="true">
	<context />
	</template>
	<template name="f" value="function $NAME$($PARAM$) { $END$ }" description="Inserts function expression" toReformat="true" toShortenFQNames="true">
	<variable name="NAME" expression="" defaultValue="" alwaysStopAt="true" />
	<variable name="PARAM" expression="" defaultValue="""" alwaysStopAt="true" />
	<context>
	<option name="JAVA_SCRIPT" value="true" />
	</context>