Ruby Call Block

ruby-call-block.rb

def call_block(&block)  # NOTE: block is actually an instance of Proc
  block.call 1, 2
end
call_block { |a,b| puts "Hello #{a} and #{b}" } # "Hello 1 and 2"

def yield_params
  yield 1, 2
end
yield_params { |a,b| puts "#{a} and #{b}" } # "1 and 2"

# Example of instantiating a proc
someProc = Proc.new do
  # do stuff here
end
otherProc = lambda do
  # do other stuff here
end
puts someProc.class   # Proc
puts otherProc.class  # Proc