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authorodersky <odersky@gmail.com>2015-07-06 16:54:39 +0200
committerodersky <odersky@gmail.com>2015-07-06 16:54:39 +0200
commit70f18eb4aa5aff64aa8571c16026c456bc1db5fc (patch)
treea0f296c1c462d912d20bb2cef853298e9c8e1731 /tests/pending/pos
parent6a36dd83e78fe2d6269626480577f8166ab7e37e (diff)
parente984e232bb21c8b24f7f591239afd1672fcf504e (diff)
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Merge pull request #694 from dotty-staging/fix/dependent-methods
Fix/dependent methods
Diffstat (limited to 'tests/pending/pos')
-rw-r--r--tests/pending/pos/depmet_implicit_chaining_zw.scala28
1 files changed, 0 insertions, 28 deletions
diff --git a/tests/pending/pos/depmet_implicit_chaining_zw.scala b/tests/pending/pos/depmet_implicit_chaining_zw.scala
deleted file mode 100644
index a9da1e976..000000000
--- a/tests/pending/pos/depmet_implicit_chaining_zw.scala
+++ /dev/null
@@ -1,28 +0,0 @@
-trait Zero
-trait Succ[N]
-
-trait ZipWith[N, S] {
- type T
- val x: T = sys.error("")
-}
-
-object ZipWith {
- implicit def ZeroZipWith[S]: ZipWith[Zero,S]{type T = Stream[S]} = new ZipWith[Zero, S] {
- type T = Stream[S]
- }
-
- implicit def SuccZipWith[N, S, R](implicit zWith : ZipWith[N, R]): ZipWith[Succ[N],S => R]{type T = Stream[S] => zWith.T} = new ZipWith[Succ[N], S => R] {
- type T = Stream[S] => zWith.T // dependent types replace the associated types functionality
- }
-
- // can't use implicitly[ZipWith[Succ[Succ[Zero]], Int => String => Boolean]],
- // since that will chop of the {type T = ... } refinement in adapt (pt = ZipWith[Succ[Succ[Zero]], Int => String => Boolean])
- // this works
- // def zipWith(implicit zw: ZipWith[Succ[Succ[Zero]], Int => String => Boolean]): zw.T = zw.x
- // thus, I present ?: implicitly on steroids!
- def ?[T <: AnyRef](implicit w: T): w.type = w
-
- type _2 = Succ[Succ[Zero]]
- val zw = ?[ZipWith[_2, Int => String => Boolean]].x // : Stream[Int] => Stream[String] => Stream[Boolean]
- // val zw = implicitly[ZipWith[Succ[Succ[Zero]], Int => String => Boolean]{type T = Stream[Int] => Stream[String] => Stream[Boolean]}].x
-}