Scala 元组到字符串
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scala tuple to String
提问by Ashwini Khare
Suppose I have a list of tuples
假设我有一个元组列表
('a', 1), ('b', 2)...
How would one get about converting it to a String in the format
如何将其转换为格式的字符串
a 1
b 2
I tried using collection.map(_.mkString('\t'))However I'm getting an error since essentially I'm applying the operation to a tuple instead of a list. Using flatMapdidn't help either
我尝试使用collection.map(_.mkString('\t'))但是我收到一个错误，因为我基本上是将操作应用于元组而不是列表。使用flatMap也没有帮助
回答by Sergii Lagutin
For Tuple2you can use:
因为Tuple2您可以使用：
val list = List(("1", 4), ("dfg", 67))
list.map { case (str, int) => s"$str $int"}
For any tuples try this code:
对于任何元组，请尝试以下代码：
val list = List[Product](("dfsgd", 234), ("345345", 345, 456456))
list.map { tuple =>
tuple.productIterator.mkString("\t")
}
