[GROOVY-222] add a grep method on Object to perform a filter using a case expression (regex, range, class etc)

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.0-beta-4
• Assignee: Unassigned
• Reporter: James Strachan
• Created: 25/Feb/04 23:07
• Updated: 26/Feb/04 00:44
• Resolved: 26/Feb/04 00:44

Description

e.g. along these lines

http://www.rubycentral.com/ref/ref_m_enumerable.html#grep

In groovy we could do

[1, 2, 3, 4, 5, 6, 7].grep(2..4)
-> [2, 3, 4]

or

["ab", "ac", "bc"].grep(~"a")
-> ["ab", "ac"]

or

[1.1, 2, 3.4, 5.6, 7].grep(Integer)
-> [2, 7]

At the implementation we can find the items in the collection which return true for the 'isCase' method (used in switch statements)