Issue #20040 has been updated by matz (Yukihiro Matsumoto). Theoretically possible, but could you show us a specific use case, please? Matz. ---------------------------------------- Feature #20040: Make Hash respond do deconstruct to allow matchting key/value pairs https://bugs.ruby-lang.org/issues/20040#change-105527 * Author: Anonymous * Status: Open * Priority: Normal ---------------------------------------- It would be nice to allow pattern matching to work on key/value pairs of a Hash to e.g. find the first entry, or entries where the key is not known. Example: ``` class Hash; def deconstruct = to_a; end {a: 1, b: 2} => [[k, v], *] puts "k=#{k}" # :a puts "v=#{v}" # 1 {a: 1, b: 2} => [*, [k, 2], *] puts "k=#{k}" # :b ``` -- https://bugs.ruby-lang.org/