Groovy map method of collections

Question

Is there a map method in Groovy? I want to do something like I do with the following Scala snippet:

scala> val l = List(1, 2, 3)
l: List[Int] = List(1, 2, 3)

scala> l.map(_ + 1)
res0: List[Int] = List(2, 3, 4)

Solution

There is such a method in groovy, it is called collect, for example:

assert [1, 2, 3].collect { it * 2 } == [2, 4, 6]

http://docs.groovy-lang.org/next/html/documentation/working-with-collections.html#_iterating_on_a_list

Comments

[sbglasius]

assert [1,2,3].collect {it+1} == [2,3,4]

[ruX]

Quite strange function name for very popular idiom

[Καrτhικ]

If you think collect is strange, wait until you come across 'inject' for reduce/fold operation!

[Roy Tinker]

I suspect collect and inject are borrowed from methods by those names in Ruby's Enumerable mixin.

[Paul Draper]

@RoyTinker, is probably correct. Groovy takes some inspiration from Ruby's function names (collect, inject), and its syntax (def, optional parens, braces for closures).

[Gaurav]

works flawlessly!