From: Steven Lumos <steven@...>
Date: 2006-09-14T09:57:06+09:00
Subject: Re: Maximum value of hash

"Marcelo Alvim" <malvim@gmail.com> writes:
>> Actually the Enumerable mixin module implements max, so any enumerable
>> has it, and gives you the maximum element yielded by each
>>
>> (1..10).max #=> 10
>> {'a' => 1, 'b' => 7}.max #=> ["b", 7]
>> "abc\ndef".max #=> "def"
>
> This is really sweet, but I think in this context it's worth noting that:
>
> {'a' => 1, 'b' => 10, 'z' => 5}.max #=> ["z", 5]
>
> As the thread is about hashes, it's nice to know that the #max method,
> when applied to hashes, apparently yields the maximum value for the
> keys, not for the values.
>
> Alvim.

{'a' => 1, 'b' => 10, 'z' => 5}.max {|a,b| a[1] <=> b[1]}  #=> ["b", 10]

Steve