Scala sum of the arrays contained in an array

Question

I have defined a function that receives an array of arrays. I want to get the sum of all arrays. My question is how to make that sum.

def suma[T](args: WrappedArray[T]*)(implicit n: Numeric[T]) = {
    args.transpose.map(_.sum)
} 
def sum[T](arr: WrappedArray[WrappedArray[T]])(implicit n: Numeric[T]) = {
    val result = suma( ______ )
}

I thought I use the defined "sum" , but not how to pass the contents of the container array. Like there is a much simpler way to do this. Any ideas?

Dima · Accepted Answer · 2016-03-22 10:32:14Z

2

To get "sum of all arrays" you want .flatten, not .transpose. args.flatten.sum should do it.

Or are you asking how to call a function with vargargs? For that, you need a splat operator: val result = suma(arr:_*)

answered Mar 22, 2016 at 10:32

Dima

40.6k6 gold badges54 silver badges80 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Scala sum of the arrays contained in an array

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related