From: "rosenfeld (Rodrigo Rosenfeld Rosas)" Date: 2012-03-29T22:23:38+09:00 Subject: [ruby-core:43854] [ruby-trunk - Feature #6150] add Enumerable#grep_v Issue #6150 has been updated by rosenfeld (Rodrigo Rosenfeld Rosas). Oh, I see, I actually prefer this way so that I won't read code from others just passing "true". This is specially a big issue for boolean parameters as they don't mean anything by themselves. ---------------------------------------- Feature #6150: add Enumerable#grep_v https://bugs.ruby-lang.org/issues/6150#change-25363 Author: sunaku (Suraj Kurapati) Status: Open Priority: Normal Assignee: Category: Target version: Please add a grep_v() method to Enumerable that behaves like the opposite of grep(). For example, if Enumerable#grep() was implemented like this: module Enumerable def grep pattern select {|x| pattern =~ x } end end then Enumerable#grep_v() would be implemented like this (select becomes reject): module Enumerable def grep_v pattern reject {|x| pattern =~ x } end end The method name "grep_v" comes from the "-v" option passed to grep(1). Thanks for your consideration. -- http://bugs.ruby-lang.org/