Some operations on tuples #7057
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Pickling issues in question: #7058 |
anatoliykmetyuk
changed the title
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Here is an implementation of object App1 {
type Zip[T1, T2] <: Tuple = (T1, T2) match {
case (h1 *: t1, h2 *: t2) => (h1, h2) *: Zip[t1, t2]
case (Unit, _) => Unit
case (_, Unit) => Unit
case _ => Tuple
}
def (t1: T1) zip [T1 <: Tuple, T2 <: Tuple](t2: T2): Zip[T1, T2] = {
if (t1.size == 0 || t2.size == 0) ().asInstanceOf[Zip[T1, T2]]
else Tuple.fromArray(t1.asInstanceOf[Product].productIterator.zip(t2.asInstanceOf[Product].productIterator).toArray).asInstanceOf[Zip[T1, T2]]
}
val x: (1, 2, 3) = (1, 2, 3)
val y: (4, 5, 6) = (4, 5, 6)
val z: ((1, 4), (2, 5), (3, 6)) = x.zip(y)
} |
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Superseded by #7073 |
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Blocked by pickling issues. Also, #7056 prevents using extension methods from the type class.