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bwmcadams/Chained Partial functions.scala

Created April 5, 2011 20:58
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Chained Partial functions.scala
scala> val x: PartialFunction[String, Unit] = { case "foo" => println("Foo") }
x: PartialFunction[String,Unit] = <function1>
scala> x("foo")
Foo
scala> x("bar")
scala.MatchError: bar
scala> val y: PartialFunction[String, Unit] = { case "bar" => println("Bar") }
y: PartialFunction[String,Unit] = <function1>
scala> y("bar")
Bar
scala> val z = x orElse y
z: PartialFunction[String,Unit] = <function1>
scala> z("foo")
Foo
scala> z("bar")
Bar
scala> z("baz")
scala.MatchError: baz
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