Aristóteles Coutinho aristotelesbr

Improved YARD CHEATSHEET http://yardoc.org

forked from https://gist.github.com/chetan/1827484 which is from early 2012 and contains outdated information.

Templates to remind you of the options and formatting for the different types of objects you might want to document using YARD.

Ruby: Blocks, Procs, Lambdas

Note that for blocks, {} and do ... end are interchangeable. For brevity, only the former will be listed here.

Version differences

Pre-1.9, lambda and proc are synonyms. Essentially the difference is between proc and block.

def method(&block) p block.class; p block.inspect; end
l = lambda { 5 }

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

Dynamic Dispatch
Dynamic Method
Ghost Methods
Dynamic Proxies
Blank Slate
Kernel Method
Flattening the Scope (aka Nested Lexical Scopes)
Context Probe
Class Eval (not really a 'spell' more just a demonstration of its usage)
Class Macros

In Clojure you can apply destructuring within either a let binding list; function parameter list or even a macro.

A simple example would be:

(def coords [5 7]) ; define a symbol "coords" that points to a vector [5 7]
(let [[x y] coords] (println "x:" x "y:" y))
; => x: 5 y: 7

	source 'https://rubygems.org'
	gem "graphql", github: "rmosolgo/graphql-ruby", branch: "subscriptions"
	gem "sinatra"
	gem "thin"

-# Stop all containers
-docker stop `docker ps -qa`
-# Remove all containers
-docker rm `docker ps -qa`
-# Remove all images
-docker rmi -f `docker images -qa `
-# Remove all volumes

	syntax on
	set ruler " Show the line and column numbers of the cursor.
	set formatoptions+=o " Continue comment marker in new lines.
	set textwidth=0 " Hard-wrap long lines as you type them.
	set modeline " Enable modeline.
	set esckeys " Cursor keys in insert mode.
	set linespace=0 " Set line-spacing to minimum.
	set nojoinspaces " Prevents inserting two spaces after punctuation on a join (J)
	" More natural splits
	set splitbelow " Horizontal split below current.

	FROM rails:4.2.3

	MAINTAINER Renato Filho <[email protected]>

	ENV HOME /home/app
	ENV RAILS_ENV development

	RUN useradd -m -s /bin/bash app

	RUN gem install -N bundler

	require 'rails_helper'

	RSpec.describe TodosController, :type => :controller do

	describe "GET #index" do
	#describe "POST #create" do
	#describe "GET #show" do
	#describe "PATCH #update" do (or PUT #update)
	#describe "DELETE #destroy" do
	#describe "GET #new" do