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| author | Aleksandar Prokopec <axel22@gmail.com> | 2012-10-03 18:06:39 +0200 |
|---|---|---|
| committer | Aleksandar Prokopec <axel22@gmail.com> | 2012-10-04 11:32:27 +0200 |
| commit | b405a2969477f9e9a76274eac1ebda3c0f2942ad (patch) | |
| tree | 067747051a075740b041b665271032cfb31eb577 /src/library/scala/collection/GenTraversableOnce.scala | |
| parent | 3ffc62b49914c6bf466f0f5e10c8f34b2cff5899 (diff) | |
| download | scala-b405a2969477f9e9a76274eac1ebda3c0f2942ad.tar.gz scala-b405a2969477f9e9a76274eac1ebda3c0f2942ad.tar.bz2 scala-b405a2969477f9e9a76274eac1ebda3c0f2942ad.zip | |
SI-6467: Zero element in aggregate now by-name
Diffstat (limited to 'src/library/scala/collection/GenTraversableOnce.scala')
| -rw-r--r-- | src/library/scala/collection/GenTraversableOnce.scala | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/library/scala/collection/GenTraversableOnce.scala b/src/library/scala/collection/GenTraversableOnce.scala index a872bc0948..9167280910 100644 --- a/src/library/scala/collection/GenTraversableOnce.scala +++ b/src/library/scala/collection/GenTraversableOnce.scala @@ -261,11 +261,12 @@ trait GenTraversableOnce[+A] extends Any { * @tparam B the type of accumulated results * @param z the initial value for the accumulated result of the partition - this * will typically be the neutral element for the `seqop` operator (e.g. - * `Nil` for list concatenation or `0` for summation) + * `Nil` for list concatenation or `0` for summation) and may be evaluated + * more than once * @param seqop an operator used to accumulate results within a partition * @param combop an associative operator used to combine results from different partitions */ - def aggregate[B](z: B)(seqop: (B, A) => B, combop: (B, B) => B): B + def aggregate[B](z: =>B)(seqop: (B, A) => B, combop: (B, B) => B): B /** Applies a binary operator to all elements of this $coll, going right to left. * $willNotTerminateInf |