Groovy中有Scala'zip'函数吗? [英] Is there any analog for Scala 'zip' function in Groovy?
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问题描述
$ $ p $ $ $ $ $ $ $ a $ List $($ 1 $ b val b = List(4,5)
println(a zip b)
会产生 List((1,4),(2,5))
作为输出。
现在我在Groovy中有两个集合,以类似的方式压缩它们。 Groovy的相当于Scala的 zip $ c $
列表#转换
,可以在清单列表中调用: assert [[转置()== [[1,4],[2,5]]
In Scala I can write something like this:
val a = List(1, 2, 3)
val b = List(4, 5)
println(a zip b)
That would produce List((1,4), (2,5))
as output.
Now I have two collections in Groovy and want to zip them in similar fashion. What is the simplest way to do this?
解决方案
Groovy's equivalent of Scala's zip
is List#transpose
, which can be called on a list of lists:
assert [[1, 2, 3], [4, 5]].transpose() == [[1, 4], [2, 5]]
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