From: Warren Brown <WBrown@...>
Date: 2004-05-25T04:15:23+09:00
Subject: Re: Numeric#of

Ara,

> i end up doing this sort of thing alot:
>
> avg, max, min = {}, {}, {}
>
> stack_a, stack_b = [], []
>
> and was thinking about a general syntax for 'n of these' or
> 'n of the result of this block'...  does this read alright?
>
> ~ > cat of.rb
> class Numeric
>   def of
>     ret = []
>     times{|i| ret << yield(i)}
>     ret
>    end
> end
>
> them = 3.of{ Array.new }
> p them # => [[],[],[]]

    I'm sure you've already thought about this, but just in case you
haven't:

them = (1..3).collect( Array.new )
# ...or...
them = (1..3).map( Array.new)
p them # => [[],[],[]]

    It's almost as clean as your Numeric (shouldn't that be Integer?)
#of method.

    - Warren Brown