From: sto.mar@... Date: 2017-01-29T18:26:32+00:00 Subject: [ruby-core:79301] [Ruby trunk Feature#9116] String#rsplit missing Issue #9116 has been updated by Marcus Stollsteimer. I'd like to revive the discussion about String#rsplit. Here one use case I stumbled upon recently: splitting the digest off the end of a cookie (taken from Rack::Session::Cookie, see https://github.com/rack/rack/blob/master/lib/rack/session/cookie.rb#L139): ~~~ session_data = "session--data--digest" digest, session_data = session_data.reverse.split("--", 2) digest.reverse! if digest session_data.reverse! if session_data session_data # => "session--data" digest # => "digest" ~~~ Note that each substring needs to be reversed back (for higher limits this would probably be done using #map), which seems inefficient and unhandy. With rsplit this would become: ~~~ session_data = "session--data--digest" session_data, digest = session_data.rsplit("--", 2) ~~~ ---------------------------------------- Feature #9116: String#rsplit missing https://bugs.ruby-lang.org/issues/9116#change-62714 * Author: Ramkumar Ramachandra * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- There's nothing corresponding to Python's rsplit(). A quick glance at rb_str_split_m() tells me that it should be pretty trivial to implement. Is there any specific reason it hasn't already been done? -- https://bugs.ruby-lang.org/ Unsubscribe: