ruby procedures closures

closures.rb

# blocks
# most basic closure
# can not be saved

# wrong_proc = { puts 'hi' }
correct_proc = Proc.new { puts 'procedure' }
3.times { puts 'block' } # works

# 3.times proc # wont work
3.times(&correct_proc)

lambda_proc = lambda {|x| puts 'lambda' }
# dash rocket syntax
lambda_proc_2 = ->(x) { puts 'lambda v2' }
3.times(&lambda_proc)
3.times(&lambda_proc_2)