From: Pit Capitain <pit.capitain@...>
Date: 2009-02-08T00:37:13+09:00
Subject: Re: Special Hash Constructors

2009/2/7 Tom Link <micathom@gmail.com>:
> Not so good:
> TypeError: can't dup Fixnum

I often use

  class Hash
    def self.new_with
      new { |h, k| h[k] = yield }
    end
  end

  Hash.new_with { [] }

which works with Arrays and Fixnums, though it isn't needed for the latter.

Regards,
Pit