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Diffstat (limited to 'src/library/scala/Equals.scala')
| -rw-r--r-- | src/library/scala/Equals.scala | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/library/scala/Equals.scala b/src/library/scala/Equals.scala new file mode 100644 index 0000000000..aa02cb0982 --- /dev/null +++ b/src/library/scala/Equals.scala @@ -0,0 +1,26 @@ +/* __ *\ +** ________ ___ / / ___ Scala API ** +** / __/ __// _ | / / / _ | (c) 2002-2009, LAMP/EPFL ** +** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ ** +** /____/\___/_/ |_/____/_/ | | ** +** |/ ** +\* */ + +// $Id: Equals.scala 18478 2009-08-13 21:30:20Z stepancheg $ + +package scala + +/** An interface containing operations for equality + * The only method not already present in AnyRef is canEqual + */ +trait Equals { + /** A method that should be called from every well-designed equals method + * that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 + * for discussion and design. + */ + def canEqual(that: Any): Boolean + + /** The equality method defined in AnyRef + */ + def equals(that: Any): Boolean +} |