[GROOVY-2560] sum, min and friends should work on the same types that collect, each and their friends work on.

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.5.1
• Fix Version/s: 1.5.5, 1.6-beta-1
• Assignee: Paul King
• Reporter: Ted Dunning
• Created: 30/Jan/08 21:43
• Updated: 17/Apr/08 07:26
• Resolved: 12/Feb/08 06:36

Description

[1,2,3].sum() works nicely.

But [1,2,3].iterator().sum() fails.

In contrast, this code

[1,2,3].iterator().each {
println it
}

works just fine.

On aesthetic grounds, there shouldn't be any difference in what works and what doesn't. More importantly, there are situations where an iterator is available (due to pre-existing API's) but a collection is not.