[GROOVY-3992] Add a reverse method to Map

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.7.2, 1.8-beta-1
• Assignee: Paul King
• Reporter: Keegan Witt
• Created: 11/Jan/10 14:04
• Updated: 07/Apr/15 19:12
• Resolved: 13/Mar/10 05:03

Description

It would be nice to be able to reverse the order of a map without running collect on it first. For example,

def foo = ["string1":1, "string2":2, "string3":3]
println foo.sort

{it.value}.collect{it}.reverse() // <-- this works
//println foo.sort {it.value}

.reverse() // <-- this is what I propose

This is, of course, a simplistic example for which there are workarounds, like
foo.sort {-it.value}
but I could imagine other potential uses for this method.

Issue Links

• is related to: GROOVY-2597 Map or Property Sort