Collection.strap

strap.scala

Welcome to Scala version 2.10.4 (OpenJDK 64-Bit Server VM, Java 1.6.0_27).
Type in expressions to have them evaluated.
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scala> import rapture.core._
import rapture.core._

scala> List.strap(1, Some(2), None)
res0: List[Int] = List(1, 2)

scala> Vector.strap("a", List("b", "c"), "d", Some("e"))
res1: scala.collection.immutable.Vector[String] = Vector(a, b, c, d, e)

scala> Array.strap(None, Nil, Some('a))
res2: Array[Symbol] = Array('a)

scala> Vector.strap(None, Some(None), Some(Some(8)))
res3: scala.collection.immutable.Vector[Option[Int]] = Vector(None, Some(8))

scala> Seq.strap(1, if(math.random < 0.5) List(2, 3) else Nil)
res4: Seq[Int] = List(1)

scala> Seq.strap(1, if(math.random < 0.5) List(2, 3) else Nil)
res5: Seq[Int] = List(1, 2, 3)