From: sawadatsuyoshi@... Date: 2019-12-28T03:34:59+00:00 Subject: [ruby-core:96535] [Ruby master Feature#16460] External names for keyword parameters in method definitions Issue #16460 has been updated by sawa (Tsuyoshi Sawada). What is `foo`? ---------------------------------------- Feature #16460: External names for keyword parameters in method definitions https://bugs.ruby-lang.org/issues/16460#change-83463 * Author: harrisonb (Harrison Bachrach) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- Hello! This is my first time filing an issue and I was unable to find anything similar. I apologize if one already exists. In other languages (such as JavaScript, Swift, and Crystal), it is possible to have two names for a given keyword argument: one that is used in method invocation, and one used in the method definition. Here is an example from Crystal (which has syntax very similar to Ruby): ```crystal def increment(value, by amount) value + amount end increment(value: 5, by: 10) ``` This helps create more readable method invocations and definitions. It would be especially helpful in Ruby as the language lacks a destructuring syntax for hashes/keyword args. This is unlike JavaScript, where you can do something like ```javascript const { nameOfOneProperty: newNameForTheProperty, nameOfAnotherProperty: newNameForTheOtherProperty } = foo; ``` I'm thinking that such a change would pair nicely with the new 3.0 keyword argument changes. A suggested syntax might be ```ruby def name(external_name internal_name:) # ... end -- https://bugs.ruby-lang.org/ Unsubscribe: