Andrei Listochkin (Андрей Листочкин) listochkin

This serves as a base canary gist for @rwjblue.

A few useful links for the main source/gist are:

TL;DR:

Rails has a library, ActiveSupport, which adds methods to Ruby core classes. One of those methods is String#blank?, which returns a boolean (sometimes I miss this convention in Rust, the ?) if the whole string is whitespace or not. It looks like this: https://github.com/rails/rails/blob/b3eac823006eb6a346f88793aabef28a6d4f928c/activesupport/lib/active_support/core_ext/object/blank.rb#L99-L117

It's pretty slow. So Discourse (which you may know from {users,internals}.rust-lang.org) uses the fast_blank gem, which provides this method via a C implementation instead. It looks like this: https://github.com/SamSaffron/fast_blank/blob/master/ext/fast_blank/fast_blank.c

For fun, Yehuda tried to re-write fast_blank in Rust. Which looks like this:

Name	Price	Integrations	Limits	Language
bugsnag.com	$29 per month	slack, jira	5 devs	javascript, php
speedcurve.com	$0.01 per check	slack, jira	-	javascript
honeybadger.io	$44 per month	slack, jira	5 projects	javascript
atatus.com	$29 per month	slack, jira	200000 view/month	javascript
muscula.com	$14 per month	-	1 000 000 errors/month	javascript
exceptional.io	-	-

When a beginner asks you "when do I use semi-colons?" would you rather say this?

// what people who say "use semicolons!!" say
class Foo {
  prop = {
  }; // yes

	# rails new app_name -d mysql --skip-bundle -m path/to/this/template.rb

	comment_lines 'Gemfile', "gem 'turbolinks'"
	comment_lines 'Gemfile', "gem 'jbuilder'"
	comment_lines 'Gemfile', "gem 'sass-rails'"
	comment_lines 'Gemfile', "gem 'coffee-rails'"
	comment_lines 'Gemfile', "gem 'uglifier'"
	comment_lines 'Gemfile', "gem 'sdoc'"

	gsub_file 'Gemfile', "gem 'mysql2'", "gem 'mysql2', '~> 0.3.20'"

	# Save this file to ~/.multirust/Makefile
	# to run, cd ~/.multirust; make toolchains/1.3.0/src
	.PHONY: clean

	rust.git:
	git clone https://github.com/rust-lang/rust.git --bare

	toolchains/nightly/src: toolchains/master/src
	ln -sf $$(pwd)/toolchains/master/src $$(pwd)/$@

	import Ember from 'ember';
	import StartExamMixin from '../../../mixins/start-exam';
	import { module, test } from 'qunit';
	import sinon from 'sinon';

	const {
	RSVP,
	ActionHandler
	} = Ember;


	Thank you for extending an invitation to speak at HighLoad++. I
	sincerely appreciate your consideration.

	I am an outspoken advocate for LGBTQ equality; this position is deeply
	woven into my work. Clojure From The Ground Up is adamantly
	LGBT-inclusive. Jepsen is named after a gay pop anthem and includes
	dozens of references to same-sex relationships and trans identities. My
	talk slides are populated with bearded nuns, genderqueer punks, and
	trans hackers. My twitter feed is about as gay as it is possible to get.

	// Have some complicated non-React widgets that manipulate DOM?
	// Do they manage a list of DOM elements? Here's how to wrap it
	// into a React component so you can "constantly rerender" it.

	// A dumb non-react widget that manually manage some DOM node that
	// represent a list of items
	function NonReactWidget(node) {
	this.node = node;
	}