From: Tony Arcieri <tony.arcieri@...>
Date: 2012-02-07T11:07:04+09:00
Subject: Re: Using _ like in Scala?

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On Mon, Feb 6, 2012 at 5:56 PM, Eric Christopherson <
echristopherson@gmail.com> wrote:

> > IMHO, Ruby's block argument semantics are already crazy enough.
>
> How so?


The status quo is:

- Yielding arguments to a block without arguments discards the arguments
- Yielding a higher arity than what the block accepts truncates the
arguments bound (the above can be considered the degenerate case of this)
- Yielding a lower arity binds arguments to nil

So okay, given that, maybe a default argument could jive. I've seen the
same thing in Groovy, except they call it "it"

_ has precedence in irb already as the result of the last expression
evaluated... but _ might still work for this purpose. I've been using in in
the Erlang sense sometimes to discard a variable in cases where I don't
care (although thanks to what Ruby syntax allows even that is superfluous)

-- 
Tony Arcieri

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