From: Niklas Frykholm <niklas@...>
Date: 2001-10-10T05:45:52+09:00
Subject: [ruby-talk:22342] Re: blocks with min and max

On Wed, Oct 10, 2001 at 04:45:45AM +0900, Mathieu Bouchard wrote:
> On Wed, 10 Oct 2001, Yukihiro Matsumoto wrote:
> > Enumerable#min and #max already work like the former, i.e.
> >   largest = collection.max {|obj1, obj2| obj1.attrib <=> obj2.attrib}
> > But I now think I should have chosen the latter.
> >   largest = collection.max {|obj| obj.attrib}
> 
> Then how would this translate to the latter way?
> 
>     largest = collection.max {|obj1, obj2|
> 	r = obj1.foo <=> obj2.foo
> 	r = nil if r == 0
>         r || (obj1.bar <=> obj2.bar)
>     }

    largest = collection.max {|obj| [obj.foo, obj.bar]}

Looks better too.

// Niklas