Question

Say I have a method that returns this.

Vector[ (PkgLine, Tree) ]()

I want to convert this to a List of PkgLines. I want to drop the Tree off. I’m not seeing anything in the scala library that would allow me to do this. Anybody have any simple ideas? Thanks.

Answer 1

val list = vector.map(_._1).toList

If you have a Tupel t, you can access its first element using t._1. So with the map operation, you’re effectively throwing away the trees, and store the PkgLines directly. Then you simply convert the Vector to List.