From: Pixel <pixel@...>
Date: 2001-12-11T04:34:38+09:00
Subject: [ruby-talk:28130] Re: How does puts decide how to print a given object?

matz@ruby-lang.org (Yukihiro Matsumoto) writes:

>   (3) unlike other objects, arrays are sometimes very big.  imagine
>       the code like 'puts File.readlines("bigfile")'.  calling to_s
>       inside wastes huge memory region.

one solution is to use stream a la C++:

def puts_powered(*l)
  l.each{|o|
    if o.respond_to?("to_io") then
      o.to_io($defout)
    else
      puts(o.to_s)
    end
  }
end

but it may be overkill/not good for compatibility...


--
Pixel
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