From: Fuad Saud <fuadksd@...>
Date: 2013-10-18T02:19:09-03:00
Subject: [ruby-core:57930] Re: [CommonRuby - Feature #9023] Array#tail

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I can understand maybe tail is not the best name to describe this concept,
nor any of the other options. But it is still a pretty common idiom among
many functional languages.

I like cdr, but it wouldn't make much sense to introduce it in ruby today -
it may confuse newcomers a lot, since that's not vey intuitive.

Rest doesn't feel right. What is rest? It's a remainder, but if you drop
the last element, then what remains is still a kind of rest :/

Butfirst is weird for me, but bbatsov (powerpack maintainer) prefered it
over tail, and it makes it very clear what it means (e.g.
people.but_first.each do ... means iterate over people but the first).

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<p>I can understand maybe tail is not the best name to describe this concept, nor any of the other options. But it is still a pretty common idiom among many functional languages.</p>
<p>I like cdr, but it wouldn&#39;t make much sense to introduce it in ruby today - it may confuse newcomers a lot, since that&#39;s not vey intuitive.</p>
<p>Rest doesn&#39;t feel right. What is rest? It&#39;s a remainder, but if you drop the last element, then what remains is still a kind of rest :/</p>
<p>Butfirst is weird for me, but bbatsov (powerpack maintainer) prefered it over tail, and it makes it very clear what it means (e.g. people.but_first.each do ... means iterate over people but the first).</p>

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