Amol Pujari amolpujari

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 much simpler to think about both the old list and the new one, what they contain, and

	#!/bin/bash

	while :
	do
	clear
	git --no-pager log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%ci) %C(bold blue)<%an>%Creset' --abbrev-commit --date=relative --all
	sleep 1
	done

	# Elixir has pipes `\|>`. Let's try to implement those in Ruby.
	#
	# I want to write this:
	#
	# email.body \| RemoveSignature \| HighlightMentions \| :html_safe
	#
	# instead of:
	#
	# HighlightMentions.call(RemoveSignature.call(email.body)).html_safe
	#

	## Prepare ###################################################################

	# Remove RVM
	rvm implode

	# Ensure your homebrew is working properly and up to date
	brew doctor
	brew update

	## Install ###################################################################