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author | Paul Phillips <paulp@improving.org> | 2012-04-27 07:24:46 -0700 |
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committer | Paul Phillips <paulp@improving.org> | 2012-04-27 07:24:46 -0700 |
commit | 1c3f66b6f2d41c02cc2bc32cb696aafa56b71176 (patch) | |
tree | afd2ec64dc39ac29c2fc15221e431d2d8548a9e7 /src/library/scala/Function1.scala | |
parent | 57574bb10833e90338bd0eadef9dabe260b8afda (diff) | |
download | scala-1c3f66b6f2d41c02cc2bc32cb696aafa56b71176.tar.gz scala-1c3f66b6f2d41c02cc2bc32cb696aafa56b71176.tar.bz2 scala-1c3f66b6f2d41c02cc2bc32cb696aafa56b71176.zip |
Revert "Moved ancillary methods off specialized traits."
This reverts commit 1d0372f84f9a7325a47beb55169cc454895ef74b.
I forgot about polymorphic dispatch. Have to seek another way.
Diffstat (limited to 'src/library/scala/Function1.scala')
-rw-r--r-- | src/library/scala/Function1.scala | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/library/scala/Function1.scala b/src/library/scala/Function1.scala index a4391c1509..8995ef912b 100644 --- a/src/library/scala/Function1.scala +++ b/src/library/scala/Function1.scala @@ -38,5 +38,21 @@ trait Function1[@specialized(scala.Int, scala.Long, scala.Float, scala.Double, s */ def apply(v1: T1): R + /** Composes two instances of Function1 in a new Function1, with this function applied last. + * + * @tparam A the type to which function `g` can be applied + * @param g a function A => T1 + * @return a new function `f` such that `f(x) == apply(g(x))` + */ + def compose[A](g: A => T1): A => R = { x => apply(g(x)) } + + /** Composes two instances of Function1 in a new Function1, with this function applied first. + * + * @tparam A the result type of function `g` + * @param g a function R => A + * @return a new function `f` such that `f(x) == g(apply(x))` + */ + def andThen[A](g: R => A): T1 => A = { x => g(apply(x)) } + override def toString() = "<function1>" } |