From: eregontp@... Date: 2016-12-27T22:15:48+00:00 Subject: [ruby-core:78879] [Ruby trunk Feature#13077] [PATCH] introduce String#fstring method Issue #13077 has been updated by Benoit Daloze. So this is essentially like Java's String.intern()? There is already String#intern in Ruby but it returns a Symbol. Depending on the use-case, I guess this might be less convenient than getting a de-duplicated String. String#dedup or sounds better than #fstring. ---------------------------------------- Feature #13077: [PATCH] introduce String#fstring method https://bugs.ruby-lang.org/issues/13077#change-62290 * Author: Eric Wong * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- introduce String#fstring method This exposes the rb_fstring internal function to return a deduped and frozen string. This is useful for writing all sorts of record processing key values maybe stored, but certain keys and values are often duplicated at a high frequency, so memory savings can noticeable. Use cases are many: * email/NNTP header processing There are some standard header keys everybody uses (From/To/Cc/Date/Subject/Received/Message-ID/References/In-Reply-To), as well as common ones specific to a certain lists: (ruby-core has X-Redmine-* headers) It is also useful to dedupe values, as most inboxes have multiple messages from the same sender, or MUA. * package management systems - things like RubyGems stores identical strings for licenses, dependency names, author names/emails, etc * HTTP headers/trailers - standard headers (Host/Accept/Accept-Encoding/User-Agent/...) are common, but there are also uncommon ones. Values may be deduped, as well, as it is likely a user agent will make multiple/parallel requests to the same server. * version control systems - this can be useful for deduplicating names of frequent committers (like "nobu" :) In linux.git and git.git, there are also common trailers such as Signed-Off-By/Acked-by/Reviewed-by/Fixes/... as well as less common ones. * audio metadata - There are commonly used tags (Artist/Album/Title/Tracknumber), but Vorbis comments allows arbitrary key values to be stored. Music collections contain songs by the same artist or mutiple songs from the same album, so deduplicating values will be helpful there, too. * JSON, YAML, XML, HTML processing certain fields, tags and attributes are commonly used across the same and multiple documents ---Files-------------------------------- 0001-introduce-String-fstring-method.patch (3.47 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: