From: "marcandre (Marc-Andre Lafortune)" Date: 2012-04-01T05:52:20+09:00 Subject: [ruby-core:44027] [ruby-trunk - Feature #6166] Enumerator::Lazy#pinch Issue #6166 has been updated by marcandre (Marc-Andre Lafortune). Sorry to be late to the party. If this method was called `slice`, would it be more acceptable? It would be easy to remember, as `enum.slice` would be the same as `enum.to_a.slice` except it would stop the iteration as early as possible. ---------------------------------------- Feature #6166: Enumerator::Lazy#pinch https://bugs.ruby-lang.org/issues/6166#change-25555 Author: trans (Thomas Sawyer) Status: Rejected Priority: Normal Assignee: matz (Yukihiro Matsumoto) Category: core Target version: In previous issue #6158 it has been determined that Enumerator::Lazy#take should be lazy. But an eager form of #take would still be useful. To this end I'll suggest `Enumerator::Lazy#pinch`. Examples of usage: e.lazy.pinch 1 e.lazy.pinch 1..2 e.lazy.pinch 1,2 It is basically equivalent to calling `to_a[index]`, but has the advantage of being a single invocation instead of two, and reads better. The #pinch method would be strictly a Lazy method and have no counterpart in Enumerable. -- http://bugs.ruby-lang.org/