[GROOVY-10788] Consider adding Object deconstruction a-la Javascript

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved

Language

groovy javascript

• Assignee: Unassigned
• Reporter: Konstantin Smirnov
• Created: 07/Oct/22 09:17
• Updated: 14/Nov/22 14:55

Description

In JS you can perform following operations on Arrays:

const [ a, b, c ] = [ 1, 2, 3 ]

which corresponds to mutli-assignment in Groovy.

However JS does some really nice syntactic sugar with Object deconstruction on top:

// "forward"
const object = { question:'about life', answer:42, z:11 }
const { question, answer } = object

// "backward"
const newObject = { question, answer }

This way you can save a lot of code-duplication between declaring variables and Map keys.

The syntax could look like:

// "forward"
def object = [ question:'about life', answer:42, z:11 ]
def ( question, answer ) = object

// "backward"
def newObject = [ :question, answer: ]

What do you think?