[GROOVY-4865] Add a take method to Collections, Iterators, Arrays

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.8.1, 1.9-beta-1
• Component/s: groovy-jdk
• Assignee: Guillaume Sauthier
• Reporter: Tim Yates
• Created: 06/Jun/11 09:40
• Updated: 22/Apr/12 05:09
• Resolved: 16/Jun/11 05:49

Description

With regards to a thread in the groovy user list here:

http://groovy.329449.n5.nabble.com/How-to-access-first-10-characters-even-if-string-only-have-5-td4456146.html

A take( n ) method would be a really useful addition to the Groovy codebase

It is assumed it will work similar to other languages, in that:

def a = [ 1, 2, 3 ]

assert a.take( 0 ) == []
assert a.take( 1 ) == [ 1 ]
assert a.take( 4 ) == [ 1, 2, 3 ]

The method should work for Collection, String, Map and lazily for Iterator, Reader and InputStream

Issue Links

• relates to: GROOVY-5414 Groovy could benefit from DGM takeWhile and dropWhile methods