kotlin - Kotlin错误: Unresolved 引用:合并(对于list.merge())

Question

基于here中“生成操作”部分的代码，我有以下Kotlin代码:

val list = listOf(1,2,3,4,5,6)
val listRepeated = listOf(2,2,3,4,5,5,6)
println(list.merge(listRepeated) { it1, it2  -> it1 + it2 })

我收到以下错误消息:

Error:(33, 18) Kotlin: Unresolved reference: merge
Error:(33, 40) Kotlin: Cannot infer a type for this parameter. Please specify it explicitly.
Error:(33, 45) Kotlin: Cannot infer a type for this parameter. Please specify it explicitly.

如何获得此代码以进行正确编译？

Answer 1

如here所述，在Kotlin 1.0 Beta 2中已删除merge。

正如@tim_yates所说，此代码示例将为您提供与文章中相同的输出:

val list = listOf(1,2,3,4,5,6)
val listRepeated = listOf(2,2,3,4,5,5,6)
println(list.zip(listRepeated) { it1, it2  -> it1 + it2 })