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Diffstat (limited to 'core/src/main/scala/org/apache/spark/util/MutablePair.scala')
-rw-r--r-- | core/src/main/scala/org/apache/spark/util/MutablePair.scala | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/util/MutablePair.scala b/core/src/main/scala/org/apache/spark/util/MutablePair.scala new file mode 100644 index 0000000000..34f1f6606f --- /dev/null +++ b/core/src/main/scala/org/apache/spark/util/MutablePair.scala @@ -0,0 +1,36 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.util + + +/** + * A tuple of 2 elements. This can be used as an alternative to Scala's Tuple2 when we want to + * minimize object allocation. + * + * @param _1 Element 1 of this MutablePair + * @param _2 Element 2 of this MutablePair + */ +case class MutablePair[@specialized(Int, Long, Double, Char, Boolean/*, AnyRef*/) T1, + @specialized(Int, Long, Double, Char, Boolean/*, AnyRef*/) T2] + (var _1: T1, var _2: T2) + extends Product2[T1, T2] +{ + override def toString = "(" + _1 + "," + _2 + ")" + + override def canEqual(that: Any): Boolean = that.isInstanceOf[MutablePair[_,_]] +} |