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Diffstat (limited to 'src/dotnet-library/scala/Ordered.scala')
| -rw-r--r-- | src/dotnet-library/scala/Ordered.scala | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/dotnet-library/scala/Ordered.scala b/src/dotnet-library/scala/Ordered.scala new file mode 100644 index 0000000000..4eeab101f0 --- /dev/null +++ b/src/dotnet-library/scala/Ordered.scala @@ -0,0 +1,36 @@ +/* __ *\ +** ________ ___ / / ___ Scala API ** +** / __/ __// _ | / / / _ | (c) 2003-2006, LAMP/EPFL ** +** __\ \/ /__/ __ |/ /__/ __ | ** +** /____/\___/_/ |_/____/_/ | | ** +** |/ ** +\* */ + +// $Id$ + + +package scala + +/** A class for totally ordered data. + * + * Note that since version 2006-07-24 this class is no longer covariant in a. + * + * @author Martin Odersky + * @version 1.1, 2006-07-24 + */ +trait Ordered[a] { + + /** Result of comparing <code>this</code> with operand <code>that</code>. + * returns <code>x</code> where + * <code>x < 0</code> iff <code>this < that</code> + * <code>x == 0</code> iff <code>this == that</code> + * <code>x > 0</code> iff <code>this > that</code> + */ + def compare(that: a): Int + + def < (that: a): Boolean = (this compare that) < 0 + def > (that: a): Boolean = (this compare that) > 0 + def <= (that: a): Boolean = (this compare that) <= 0 + def >= (that: a): Boolean = (this compare that) >= 0 + def compareTo(that: a): Int = compare(that) +} |