A block consists of chunks of code

You assign a name to a block

Example 1

#!/usr/bin/ruby def test puts "You are in the method" yield puts "You are again back to the method" yield end test {puts "You are in the block"}

Example 2

#!/usr/bin/ruby

def test yield 5 puts "You are in the method test" yield 100 end test {|i| puts "You are in the block #{i}"}

Example 3

def one_two_three yield 1 yield 2 yield 3 end one_two_three { |number| puts number * 10 }

10, 20, 30