From: nobu@... Date: 2018-01-19T14:55:39+00:00 Subject: [ruby-core:84932] [Ruby trunk Feature#14371] New option "recursive: true" for Hash#transform_keys! Issue #14371 has been updated by nobu (Nobuyoshi Nakada). https://github.com/nobu/ruby/tree/feature/14371-transform_keys-recursive ---------------------------------------- Feature #14371: New option "recursive: true" for Hash#transform_keys! https://bugs.ruby-lang.org/issues/14371#change-69639 * Author: tagomoris (Satoshi TAGOMORI) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- `Hash#transform_keys!` is available when we want to symbolize hash keys. But in some/many cases (for example, receiver hash object is nested configuration tree loaded from any files), hash object are nested object, which has hashes or arrays of hashes as values. It's super useful if we can transform keys of such nested values. My proposal is `Hash#transform_keys!(recursive: true, &:to_sym)`. Pseudo code is: ```ruby def transform_keys!(recursive: false, &block) # do original transform_keys! here values.each do |v| if v.respond_to?(:each) v.each{|i| i.transform_keys!(recursive: true, &block) if i.respond_to?(:transform_keys!) } else v.respond_to?(:transform_keys!) v.transform_keys!(recursive: true, &block) end end if recursive end ``` The most major usage example is: `config = MyAwesomeFormat.load(file); config.transform_keys!(recursive: true, &:to_sym)`. -- https://bugs.ruby-lang.org/ Unsubscribe: