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  1. import scala.collection.{Map, mutable}
  2.  
  3. object Main extends App {
  4.   val t: mutable.Map[String, Long] = mutable.Map("key"→ 20L)
  5.   t.getOrElseUpdate("key", 30L)
  6.   println(t)
  7. }
Success #stdin #stdout 0.4s 4382720KB
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Standard input is empty
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Map(key -> 20)
https://ideone.com/SLbuex
language:
Scala (scala 2.12.8)
created:
7 years ago
visibility:
public

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