如何在scala中解压缩列表（list（））

嗨，我是scala的初学者， 我想打开行李

List(List("hello=10","hi=21","there=13","bro=44","family=44","technology=35","hi=20","hello=100","hi=21","there=13","bro=44","family=44","technology=35","hi=21","there=13","bro=44","family=44","family=44"))

变成

List("hello=10","hi=21","there=13","bro=44","family=44","technology=35","hi=20","hello=100","hi=21","there=13","bro=44","family=44","technology=35","hi=21","there=13","bro=44","family=44","family=44")

我们怎样才能取得成功

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谢谢

您可以使用内置的列表展平方法

scala> val list = List(List("hello=10","hi=21","there=13","bro=44","family=44","technology=35","hi=20","hello=100","hi=21","there=13","bro=44","family=44","technology=35","hi=21","there=13","bro=44","family=44","family=44"))
list: List[List[String]] = List(List(hello=10, hi=21, there=13, bro=44, family=44, technology=35, hi=20, hello=100, hi=21, there=13, bro=44, family=44, technology=35, hi=21, there=13, bro=44, family=44, family=44))

scala> list.flatten
res0: List[String] = List(hello=10, hi=21, there=13, bro=44, family=44, technology=35, hi=20, hello=100, hi=21, there=13, bro=44, family=44, technology=35, hi=21, there=13, bro=44, family=44, family=44)

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使用

展平

方法