diff options
Diffstat (limited to 'src/library/scala/collection/mutable/BitSet.scala')
| -rw-r--r-- | src/library/scala/collection/mutable/BitSet.scala | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/library/scala/collection/mutable/BitSet.scala b/src/library/scala/collection/mutable/BitSet.scala index faa4155317..e92d48cfeb 100644 --- a/src/library/scala/collection/mutable/BitSet.scala +++ b/src/library/scala/collection/mutable/BitSet.scala @@ -121,8 +121,10 @@ class BitSet(protected final var elems: Array[Long]) extends AbstractSet[Int] * @return the bitset itself. */ def &= (other: BitSet): this.type = { - ensureCapacity(other.nwords - 1) - for (i <- 0 until other.nwords) + // Different from other operations: no need to ensure capacity because + // anything beyond the capacity is 0. Since we use other.word which is 0 + // off the end, we also don't need to make sure we stay in bounds there. + for (i <- 0 until nwords) elems(i) = elems(i) & other.word(i) this } @@ -160,6 +162,9 @@ class BitSet(protected final var elems: Array[Long]) extends AbstractSet[Int] * * @return an immutable set containing all the elements of this set. */ + @deprecated("If this BitSet contains a value that is 128 or greater, the result of this method is an 'immutable' " + + "BitSet that shares state with this mutable BitSet. Thus, if the mutable BitSet is modified, it will violate the " + + "immutability of the result.", "2.11.6") def toImmutable = immutable.BitSet.fromBitMaskNoCopy(elems) override def clone(): BitSet = { |