prodis

Difference between blocks, procs and lambdas.

Blocks are not objects and can't be manipulates as objects. With procs and lambdas is possible to
create objects that represents a block.

Procs and lambdas have the 'call' method, that executes the block code associated in their creation.

A proc behaves like a block, different of lambdas that behaves like a method. For that reason,
lambdas need to receive the exact number of parameters defined in your declaration.

prodis

# encoding: utf-8
# ramos_de_atividade.rb

nomes = File.readlines("ramos_de_atividade.txt")

File.open("ramos_de_atividade.yaml", "w") do |f|
  nomes.each_with_index do |nome, i|
    f.puts "ramo_de_atividade_#{i+1}"
    f.puts "  id: #{i+1}"
    f.puts "  nome: #{nome}\n"

prodis

#!/usr/bin/env ruby
# encoding: utf-8
# listar_contatos.rb

raise ArgumentError, "=> Quantidade de argumentos incorreta. Exemplo de uso: ruby listar_contatos.rb root minhasenha" if ARGV.size != 2
mysql_user, mysql_pass = ARGV

def criar_array(resultado)
  resultado.split("\n").drop(1)
end

prodis

ramo_de_atividade_1
  id: 1
  nome: Alimentos e Bebidas

ramo_de_atividade_2
  id: 2
  nome: Arte e Antiguidades

ramo_de_atividade_3
  id: 3

prodis

class Saudacao
  def initialize(name)
    @name = name
  end 

  def saudar
    "Bem vindo, #{@name}!"
  end
end

prodis

class Dog
  def initialize(name, breed)
    @name, @breed = name, breed
  end

  def bark
    puts "#{@name}: Au, au, au!"
  end

  def sleep

prodis

greet { puts "Hello" }

prodis

class Dog

end

prodis

class Dog
  attr_accessor :name, :breed

  def initialize(name, breed)
    @name, @breed = name, breed
  end

  # Os demais métodos foram omitidos
end

prodis

class Dog
  def initialize(name, breed)
    @name, @breed = name, breed
  end

  def bark
    puts "#{@name}: Au, au, au!"
  end

  def sleep