From: drenmi@... Date: 2019-09-20T02:10:29+00:00 Subject: [ruby-core:94995] [Ruby master Feature#15381] Let double splat call `to_hash` implicitly Issue #15381 has been updated by ted (Ted Johansson). I came here to file this feature request, only to find this had already been proposed. This would be beautiful, indeed. :-) ---------------------------------------- Feature #15381: Let double splat call `to_hash` implicitly https://bugs.ruby-lang.org/issues/15381#change-81623 * Author: sawa (Tsuyoshi Sawada) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- The single splat calls `to_a` implicitly on the object (if it is not an array already) so that, for example, we have the convenience of writing conditions in an array literal: ```ruby a = [ *(:foo if some_condition), *(:bar if another_condition), ] ``` And the ampersand implicitly calls `to_proc` on the object (if it is not a proc already) so that we can substitute a block with an ampersand followed by a symbol: ```ruby some_method(&:some_method_name) ``` Unlike the single splat and ampersand, the double splat does not seem to implicitly call a corresponding method. I propose that the double splat should call `to_hash` implicitly on the object if it not already a hash so that we can, for example, write a condition in a hash literal as follows: ```ruby h = { **({a: 1} if some_condition), **({b: 2) if another_condition), } ``` There may be some other benefits of this feature that I have not noticed yet. -- https://bugs.ruby-lang.org/ Unsubscribe: