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jenny-codes/proc_lambda_argument.rb

Last active April 1, 2019 11:09
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proc_lambda_argument.rb
def missing_arguments(block)
block.call('arg1', 'arg2')
end
a_proc = Proc.new { |a, b, c| "a_proc outputs #{a} & #{b} & #{c}" }
a_lambda = lambda { |a, b, c| "a_lambda output #{a} & #{b} & #{c}" }
puts missing_arguments(a_proc)
puts missing_arguments(a_lambda)
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result

a_proc outputs arg1 & arg2 &
Traceback (most recent call last):
	2: from block.rb:40:in `<main>'
	1: from block.rb:33:in `missing_arguments'
proc_lambda_argument.rb:37:in `block in <main>': wrong number of arguments (given 2, expected 3) (ArgumentError)

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