Marco Carvalho marcocarvalho

marcocarvalho / combo_helper.rb

Created June 25, 2011 17:38

Rails 3 FormBuilder Select Helper that deals with association

	#
	# ~/app/helpers/combo_helper.rb
	#
	# Association => { { id: 1, association: "Coolest" } , { id: 2, association: "Hardest" } }
	#
	# Model Class << ActiveRecord::Base
	# has_many :associations
	# end
	#
	# Use:

marcocarvalho / hash.rb

Created September 3, 2012 13:06

Hash with Initial value

	# Ao invés de fazer:
	# dentro de uma iteração

	h = {}
	h[:somekey] = {} if h[:somekey].nil?
	h[:somekey][:otherkey] = [] if h[:somekey][:otherkey].nil?

	h[:somekey][:otherkey] << item_da_teracao

	# Teremos um hash: { somekey: { :otherkey => [1, 2, 3, 4] } }

marcocarvalho / ruby-gzip-alike.rb

Created July 2, 2013 19:50

Create gzip readable files using ruby zlib

	fn = "filename"
	compressed_file_name = "#{fn}.gz"

	Zlib::GzipWriter.open(compressed_file_name) do \|gz\|
	gz.mtime = File.mtime(fn)
	gz.orig_name = fn
	gz.write IO.binread(fn)
	end

marcocarvalho / excel_spreedsheet_column_notation_calculator

Last active December 21, 2015 21:08

Excel / SpreedSheet column notation calculator in ruby

	#!/usr/bin/env ruby

	module Spreedsheet
	module ColumnNotation
	def seed
	@seed \|\|= ('A'..'Z').to_a
	end

	def position_to_column_notation(num, minus = 0)
	m = num.divmod(seed.size)

marcocarvalho / seeds.rb

Last active December 23, 2015 02:49 — forked from dcrec1/seeds.rb

marcocarvalho / remove_older_kernel_debian_like.sh

Last active December 24, 2015 01:59 — forked from vyper/remove_older_kernel_debian_like.sh

dpkg -l linux-* | grep -v libc | awk '/^ii/{ print $2}' | grep -v -e `uname -r | cut -f1,2 -d"-"` | grep -e [0-9] | xargs sudo apt-get -y purge

marcocarvalho / ruby_dependencies

Last active August 29, 2015 13:57

	#!/bin/bash

	sudo aptitude update
	sudo aptitude -y install build-essential openssl libreadline6 libreadline6-dev zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev autoconf libc6-dev libncurses5-dev automake libtool bison subversion libffi-dev