Question

So this pattern:

def foo(&block)
  block.call
end

foo lambda { puts 'hi' }

Is resulting in this:

wrong number of arguments (1 for 0) (ArgumentError)

Using Ruby 1.9.3.

Am I doing this wrong?

Answer 1

You don’t need a lambda, just the block:

def foo(&block)
  block.call
end

foo { puts 'hi' }

If you want to pass a proc, use a normal parameter:

def foo(ohai)
  ohai.call
end

foo lambda { puts 'hi' }