mlomnicki

a, *b = [1,2,3,4]
# a = 1
# b = [2,3,4]

mlomnicki

s = 'michal@example.com'
s[/^([^@]+)@(.*)/, 1] # => michal
s[/^([^@]+)@(.*)/, 2] # => example.com

s.match(/^([^@]+)@(.*)/)[1] # => michal
s.match(/^([^@]+)@(.*)/)[2] # => example.com

mlomnicki

require 'yaml'

puts "Want some magic?"

y = YAML::load(DATA)

puts y.inspect
__END__

---

mlomnicki

# Check if class inherits from antoher class

if Fixnum < Numeric
  puts "Fixnum is a numeric"
else
  puts "Fixnum is not a numeric"
end

mlomnicki

# How to check how many arguments the method accepts?

class Foo 

  def initialize
    
  end 

  def bar(a,b)
    

mlomnicki

# << operator
original = "foo"
copy = original

copy << "bar"
copy # => "foobar"
original # => "foobar"

# += operator
original = "foo"

mlomnicki

def foo(a = "hello", b = "stranger")
  puts "#{a} #{b}"
end

foo("go" "away")

mlomnicki

a = *"Hello"  #=> ["Hello"]

mlomnicki

module Foo

  def bar
    
  end

  def baz
    
  end

mlomnicki

var pg = require('pg');
var http = require('http');

var conString = "tcp://node:node@127.0.0.1/postgres";
var client = new pg.Client(conString);
client.connect();



http.createServer(function(req, res) {