scudelletti’s gists

scudelletti / composite_pattern.js

Last active August 29, 2015 14:09

Composite Pattern

	// How To Use
	// var categories = CategoryModule.Category.all();
	// var categoryComposite = new CategoryModule.CategoryComposite('CategoryComposite', categories.categorias, null);
	//
	// var categoryComposities = categoryComposite.findByName('Bar');
	//
	// var originalCategories = categoryComposities.map(function(item) {
	// return item.original;
	// });

scudelletti / vowels_count.clj

Last active August 29, 2015 14:16

Vowel Count using Clojure

	(def vowels [\a \e \i \o \u])

	(defn convert-to-num [letter]
	(if (= (some #{letter} vowels) letter)
	1
	0)))

	(defn count-vowels [phrase]
	(reduce + (map convert-to-num (clojure.string/lower-case phrase))))

scudelletti / count_words_loop.clj

Last active August 29, 2015 14:16

Count Words using Clojure - Loop and Map Reduce Way

	(defn split-words
	[phrase]
	(clojure.string/split phrase #"\s"))

	(defn count-words
	[phrase word]
	(let [words (split-words (clojure.string/lower-case phrase))
	lower-case-word (clojure.string/lower-case word)]
	(loop [head (first words)
	tail (rest words)

scudelletti / class_variable_example.rb

Last active August 29, 2015 14:17

Ruby Class Variable Examples without @@

	# Ruby Class Variable Examples without @@
	# http://www.sitepoint.com/class-variables-a-ruby-gotcha/

	class Foo
	def self.talk
	puts 'Hey! I\'m talking'
	end
	end

	class Bar

scudelletti / lambda_calculus.rb

Last active November 22, 2016 11:54

If condition on lambda calculus

	# Rules: A lamda always has 1 parameter, nothing more, nothing less
	# Useful Content: https://en.wikipedia.org/wiki/Church_encoding

	# Identity lambda
	IDENTITY = ->x { x }

	# True, returns the first argument
	TT = ->x { ->y { x } }

	# False, returns the last argument

scudelletti / ssh_config

Last active April 22, 2016 10:27

Forward port on SSH

	Host *.staging.something.com
	User someuser
	ForwardAgent yes
	LocalForward localhost:43306 localhost:3306
	LocalForward localhost:49200 localhost:9200
	LocalForward localhost:49001 localhost:9001

scudelletti / class_definition_in_specs.rb

Created May 27, 2016 07:21

How to avoid global constant in the specs

scudelletti / Dockerfile

Last active June 21, 2017 16:26

Run GUI Linux Apps through Docker with xQuartz on MacOS

	# How to Use
	# open -a XQuartz
	# socat TCP-LISTEN:6000,reuseaddr,fork UNIX-CLIENT:\"$DISPLAY\"
	# docker build . -t ds-xclock
	# docker run -e DISPLAY=YOUR_LOCAL_IP_HERE:0 -it ds-xclock
	#
	# Useful Links:
	# https://github.com/moby/moby/issues/8710
	# http://kartoza.com/en/blog/how-to-run-a-linux-gui-application-on-osx-using-docker/

scudelletti / numbers_in_lambda_calculus.lisp

Last active December 10, 2018 10:21

Numbers in Lambda Calculus - Following Destroy All Software approach

	;; Church Numbers
	(setq zero (lambda (f) (lambda (x) x)))
	(setq one (lambda (f) (lambda (x) (funcall f x))))
	(setq two (lambda (f) (lambda (x) (funcall f (funcall f x)))))

	;; Manual Calc
	(funcall (funcall zero (lambda (x) (+ 1 x))) 0)
	(funcall (funcall one (lambda (x) (+ 1 x))) 0)
	(funcall (funcall two (lambda (x) (+ 1 x))) 0)

scudelletti / export_env.sh

Created April 13, 2018 14:47

Export Env Variables stored on /etc/environment