CODEWITHSUNDEEP
scalascala-2.10scala-2.11
ssarangi
ssarangi

Reputation: 612

Apply map function to every element of NumericRange wrapped in Array in Scala

I am having trouble trying to apply a map function to an Array with NumericRange. 

val x: Array[NumericRange[Double]] = Array(-100.0 to 100.0 by 1.0)
val m = x.map(_ * theta1)

However, I am getting an error for this. :13: error: value * is not a member of scala.collection.immutable.NumericRange[Double] val m = x.map(_ * theta1)

So I understand that a NumericRange doesn't have a map function but what is an idiomatic way of doing it where I can apply a range and convert it to an array?

Upvotes: 0

Views: 552

Answers (1)

Eugene Zhulenev
Eugene Zhulenev

Reputation: 9734

When you do x.map(_ * theta1) you are trying to multiply NumericRange itself by theta1, I guess you need

val m: Array[NumericRange[Double]] = x.map(_.map(_ * theta1))

with types:

val m: Array[NumericRange[Double]] = x.map(range: NumericRange[Double] => range.map(_ * theta1))

Upvotes: 1

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