From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <ruby-core-bounces@ruby-lang.org>
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net
X-Spam-Level: 
X-Spam-ASN: AS4713 221.184.0.0/13
X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00,
	HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,
	SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2
Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75])
	by dcvr.yhbt.net (Postfix) with ESMTP id B44B620A1E
	for <normalperson@yhbt.net>; Fri, 14 Dec 2018 20:22:54 +0000 (UTC)
Received: from neon.ruby-lang.org (localhost [IPv6:::1])
	by neon.ruby-lang.org (Postfix) with ESMTP id 290671213A1;
	Sat, 15 Dec 2018 05:22:52 +0900 (JST)
Received: from mout02.posteo.de (mout02.posteo.de [185.67.36.66])
 by neon.ruby-lang.org (Postfix) with ESMTPS id AA7071212D7
 for <ruby-core@ruby-lang.org>; Sat, 15 Dec 2018 05:22:43 +0900 (JST)
Received: from submission (posteo.de [89.146.220.130]) 
 by mout02.posteo.de (Postfix) with ESMTPS id E9A602400FB
 for <ruby-core@ruby-lang.org>; Fri, 14 Dec 2018 21:22:39 +0100 (CET)
Received: from customer (localhost [127.0.0.1])
 by submission (posteo.de) with ESMTPSA id 43Ghmt4Bqmz9rxG;
 Fri, 14 Dec 2018 21:22:37 +0100 (CET)
Date: Fri, 14 Dec 2018 20:22:36 +0000
To: Ruby developers <ruby-core@ruby-lang.org>
Cc: ruby-core@ruby-lang.org
From: oleynikov@posteo.li
References: <redmine.issue-15323.20181120115943@ruby-lang.org>
 <redmine.journal-75685.20181214195821.fc18d3199205b0d6@ruby-lang.org>
In-Reply-To: <redmine.journal-75685.20181214195821.fc18d3199205b0d6@ruby-lang.org>
Message-Id: <F7LBWVOFUI.22N0GDBRHKRDH@posteo.li>
X-ML-Name: ruby-core
X-Mail-Count: 90532
Subject: [ruby-core:90532] Re: [Ruby trunk Feature#15323] [PATCH] Proposal:
	Add Enumerable#filter_map
X-BeenThere: ruby-core@ruby-lang.org
X-Mailman-Version: 2.1.15
Precedence: list
Reply-To: Ruby developers <ruby-core@ruby-lang.org>
List-Id: Ruby developers <ruby-core.ruby-lang.org>
List-Unsubscribe: <https://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>, 
 <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
List-Post: <mailto:ruby-core@ruby-lang.org>
List-Help: <mailto:ruby-core-request@ruby-lang.org?subject=help>
List-Subscribe: <https://lists.ruby-lang.org/cgi-bin/mailman/listinfo/ruby-core>, 
 <mailto:ruby-core-request@ruby-lang.org?subject=subscribe>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: ruby-core-bounces@ruby-lang.org
Sender: "ruby-core" <ruby-core-bounces@ruby-lang.org>

nardonykolyszyn@gmail.com wrote:
> (1..10).map { |e| e.even? ? (e * 2) : e }

Yeah, but without `#filter` this is still an array with 10 elements.