Scala 元组列表到平面列表 [英] Scala List of tuples to flat list

问题描述

我有元组对列表 List[(String,String)] 并且想将其展平为字符串列表 List[String].>

I have list of tuple pairs, List[(String,String)] and want to flatten it to a list of strings, List[String].

推荐答案

一些选项可能是:连接:

Some of the options might be: concatenate:

list.map(t => t._1 + t._2)

一个接一个地交错(在您发表评论之后，您似乎要求这样做):

one after the other interleaved (after your comment it seems you were asking for this):

list.flatMap(t => List(t._1, t._2))

拆分并附加它们:

list.map(_._1) ++ list.map(_._2)

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