Import clauses
An import clause has the form import p.X where the import expression X determines a set of names of members of p which are made available without qualification.
import p._ // all members of p (this is analogous to import p.* in Java).
import p.x // the member x of p.
import p.{x => a} // the member x of p renamed as a.
import p.{x, y} // the members x and y of p.
import p1.p2.z // the member z of p2, itself member of p1.
Furthermore, the clause import p1._, p2._ is a shorthand for import p1._; import p2._.
Implicitly imported into every compilation unit are, in that order:
the package java.lang,
the package scala,
and the object scala.Predef.
Members of a later import in that order hide members of an earlier import.
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