From: Nobuyoshi Nakada <nobu@...>
Date: 2011-10-27T17:16:24+09:00
Subject: [ruby-core:40447] Re: [ruby-trunk - Feature #5474][Assigned] keyword argument

Hi,

(11/10/27 11:02), Charles Oliver Nutter wrote:
> Also, Evan pointed out to me that if Ruby doesn't support mandatory
> keyword arguments, you're going to see a *lot* of this pattern:
> 
> def foo(a: nil)
>   raise ArgumentError, 'must pass value for a' unless a
>   ..
> end

It should be a positinal argument.  I can't get why it must be a
keyword argument.

> So in essence, by making all keyword arguments optional, you're
> forcing users to do their own required argument checks. Is that going
> to make programmers happy?

An alternative:
  def foo(a: raise(ArgumentError))
  end

-- 
Nobu Nakada