Convert a Seq["key1=val1"] to a Map[String, String] in Scala

Question

I have the following Seq[String], with all strings with = delimiter.

keysVals = ["Country=France", "City=Paris"]

I would like to convert it into a Map[String, String], such as

result = Map("Country"->"France", "City"->"Paris")

How to do that, please?

Answer 1

The shortest way seems to be

data.map { case s"${k}=${v}" => k -> v }.toMap

using StringContext.s.unapplySeq as in

val data = List("Country=France", "City=Paris")
println(data.map { case s"${k}=${v}" => k -> v }.toMap)

(thanks @Luis Miguel Mejía Suárez).

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Alternatively, with Regex pattern-matching:

val KeyValuePattern = "([^=]+)=([^=]+)".r
data.map { case KeyValuePattern(k, v) => k -> v }.toMap

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With good old String.split:

data.map(str => str.split("=") match { case Array(k, v) => k -> v }).toMap