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Allan-Gong/colon_underscore_star.scala

Last active November 30, 2015 23:56
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What does ':_*' (colon underscore star) do in Scala
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colon_underscore_star.scala
// :*_ tells the compiler to pass each element of arr as its own argument to echo, rather than all of it as a single argument.
// It is useful when converting list to Map in Scala
var mutableMapInstanceOfItemToBoolean = scala.collection.mutable.Map(arrayOfSomeSort.values.toList.map(item => item -> false):_*)
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