From: George Ogata <g_ogata@...>
Date: 2004-06-27T11:13:02+09:00
Subject: Re: Writing UNIX 'wc' program

Florian Gross <flgr@ccan.de> writes:

> gabriele renzi wrote:
>
>>>   longest_length = data.split(/\n/).map { |l| l.length }.max
>> longest= data.split(/\n/).sort_by{ |l| l.length }.last
>> to get the line instead of the number of elements (I believe you're
>> keeping the array in memory to handle the lines more then one time)
>
> For something like this it would be great to have a .max_by built-in.
>
> Are there any good reasons for not having it? I might write a RCR for
> it soon.

#max, like #sort, takes a block.  That good enough, isn't it?