[GROOVY-4874] Elvis assignment operator

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Duplicate
• Component/s: syntax
• Assignee: Daniel Sun
• Reporter: Uri Moszkowicz
• Created: 10/Jun/11 13:03
• Updated: 02/May/17 02:33
• Resolved: 02/Feb/17 05:10

Description

It would be nice to have an operator similar to the Elvis operator but for assignments.

a ?= b

as a shorthand for

a = b ?: a

I'm not a Ruby expert but from the Groovy mailing list it sounds like Ruby has an operator like this.

Issue Links

• duplicates: GROOVY-3880 Optional Assignment Operator
• is related to: GROOVY-5306 [PARROT] Add "a ?= 2" support (Elvis assignment): should be expanded to "a = a == null ? 2 : a"
• is related to: GROOVY-3880 Optional Assignment Operator
• is related to: GROOVY-5291 Add "a ?:= 2" support: should be expanded to "a = a ?: 2"