diff options
Diffstat (limited to 'tests/untried/pos/unapplyComplex.scala')
-rw-r--r-- | tests/untried/pos/unapplyComplex.scala | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/untried/pos/unapplyComplex.scala b/tests/untried/pos/unapplyComplex.scala new file mode 100644 index 000000000..148fcc1bb --- /dev/null +++ b/tests/untried/pos/unapplyComplex.scala @@ -0,0 +1,39 @@ +trait Complex extends Product2[Double, Double] { + def canEqual(other: Any) = other.isInstanceOf[Complex] +} + +class ComplexRect(val _1: Double, val _2: Double) extends Complex { + override def toString = "ComplexRect("+_1+","+_2+")" +} + +class ComplexPolar(val _1: Double, val _2: Double) extends Complex { + override def toString = "ComplexPolar("+_1+","+_2+")" +} + +object ComplexRect { + def unapply(z:Complex): Option[Complex] = { + if(z.isInstanceOf[ComplexRect]) Some(z) else z match { + case ComplexPolar(mod, arg) => + Some(new ComplexRect(mod*math.cos(arg), mod*math.sin(arg))) +} } } + +object ComplexPolar { + def unapply(z:Complex): Option[Complex] = { + if(z.isInstanceOf[ComplexPolar]) Some(z) else z match { + case ComplexRect(re,im) => + Some(new ComplexPolar(math.sqrt(re*re + im*im), math.atan(re/im))) +} } } + +object Test { + def main(args:Array[String]) = { + new ComplexRect(1,1) match { + case ComplexPolar(mod,arg) => // z @ ??? + Console.println("mod"+mod+"arg"+arg) + } + val Komplex = ComplexRect + new ComplexPolar(math.sqrt(2),math.Pi / 4.0) match { + case Komplex(re,im) => // z @ ??? + Console.println("re"+re+" im"+im) + } + } +} |