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author | Jason Zaugg <jzaugg@gmail.com> | 2016-12-20 13:19:19 +1000 |
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committer | Jason Zaugg <jzaugg@gmail.com> | 2016-12-20 13:19:19 +1000 |
commit | 079e8dc61704a768792c6b210a5b0cd25522ee55 (patch) | |
tree | 37154f37a745c9c7535cbe0a7f6cef486beb5870 /src/library/scala/collection/immutable | |
parent | 56fb9172756d95ef903c36efcf54f1ae95c64b4b (diff) | |
parent | 23548c4301e48cb69f05cd01ceba418dc9c36d6c (diff) | |
download | scala-079e8dc61704a768792c6b210a5b0cd25522ee55.tar.gz scala-079e8dc61704a768792c6b210a5b0cd25522ee55.tar.bz2 scala-079e8dc61704a768792c6b210a5b0cd25522ee55.zip |
Merge remote-tracking branch 'origin/2.11.x' into merge/2.11.x-to-2.12.x-20161220
Conflicts:
bincompat-backward.whitelist.conf
build.xml
src/compiler/scala/tools/nsc/typechecker/Typers.scala
src/library/scala/collection/immutable/NumericRange.scala
Diffstat (limited to 'src/library/scala/collection/immutable')
-rw-r--r-- | src/library/scala/collection/immutable/NumericRange.scala | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/library/scala/collection/immutable/NumericRange.scala b/src/library/scala/collection/immutable/NumericRange.scala index ef3fa99971..f1b831bf75 100644 --- a/src/library/scala/collection/immutable/NumericRange.scala +++ b/src/library/scala/collection/immutable/NumericRange.scala @@ -114,13 +114,18 @@ extends AbstractSeq[T] with IndexedSeq[T] with Serializable { import NumericRange.defaultOrdering override def min[T1 >: T](implicit ord: Ordering[T1]): T = - if (ord eq defaultOrdering(num)) { + // We can take the fast path: + // - If the Integral of this NumericRange is also the requested Ordering + // (Integral <: Ordering). This can happen for custom Integral types. + // - The Ordering is the default Ordering of a well-known Integral type. + if ((ord eq num) || defaultOrdering.get(num).exists(ord eq _)) { if (num.signum(step) > 0) head else last } else super.min(ord) override def max[T1 >: T](implicit ord: Ordering[T1]): T = - if (ord eq defaultOrdering(num)) { + // See comment for fast path in min(). + if ((ord eq num) || defaultOrdering.get(num).exists(ord eq _)) { if (num.signum(step) > 0) last else head } else super.max(ord) |