Miguel Guinada mguinada

Clojure Destructuring Tutorial and Cheat Sheet

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

Computers

13" Macbook Pro 3.3 GHz i7 (late 2016)
Microsoft Surface Book (2016)

Peripherals

MySQL

Getting started:

Related tutorials:

People

`:bowtie:`	😄 `:smile:`	😆 `:laughing:`
😊 `:blush:`	😃 `:smiley:`	☺️ `:relaxed:`
😏 `:smirk:`	😍 `:heart_eyes:`	😘 `:kissing_heart:`
😚 `:kissing_closed_eyes:`	😳 `:flushed:`	😌 `:relieved:`
😆 `:satisfied:`	😁 `:grin:`	😉 `:wink:`
😜 `:stuck_out_tongue_winking_eye:`	😝 `:stuck_out_tongue_closed_eyes:`	😀 `:grinning:`
😗 `:kissing:`	😙 `:kissing_smiling_eyes:`	😛 `:stuck_out_tongue:`

Rails 5.2 with webpacker, bootstrap, stimulus starter

This gist will collects all issues we solved with Rails 5.2 and Webpacker

Create Project

# Last few parameters(--skip-* part) is only my habbit not actully required
$ rails new <project_name> --webpack=stimulus --database=postgresql --skip-coffee --skip-test

	# Standalone script to try http://rom-rb.org/ with a database

	require 'bundler/inline'

	gemfile do
	source 'https://rubygems.org'
	gem 'rom'
	gem 'rom-sql'
	gem 'rom-rails'
	gem 'activemodel'

	iTerm2 emacs 24.2.1 -nw with paredit on OS X 10.8 Norwegian layout

	Left Command is my Meta.
	Left Alt used for inputting special characters.
	Caps Lock is mapped to Control.

	 > System Preferences > Keyboard > Keyboard > Special: Caps Lock: ^ Control
	iTerm > Preferences > Keys: Left Command key mapped to Right Option
	iTerm > Preferences > Profiles > Keys: Right option acts as: +Esc


	# 1) Create your private key (any password will do, we remove it below)

	$ cd ~/.ssh
	$ openssl genrsa -des3 -out server.orig.key 2048


	# 2) Remove the password

	$ openssl rsa -in server.orig.key -out server.key

	;; the SET game in clojure.spec
	;; inspired by https://github.com/jgrodziski/set-game

	(require '[clojure.spec :as s])

	(s/def ::shape #{:oval :diamond :squiggle})
	(s/def ::color #{:red :purple :green})
	(s/def ::value #{1 2 3})
	(s/def ::shading #{:solid :striped :outline})
	(s/def ::card (s/keys :req [::shape ::color ::value ::shading]))

	(ns clj-spec-playground
	(:require [clojure.string :as str]
	[clojure.spec :as s]
	[clojure.test.check.generators :as gen]))

	;;; examples of clojure.spec being used like a gradual/dependently typed system.

	(defn make-user
	"Create a map of inputs after splitting name."
	([name email]