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maiha/sum.scala

Created May 17, 2010 03:56
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sum.scala
[OK]
def sum(a:Int,b:Int) = a+b
[NG]
def sum(a:Int,b:Int) = a+b
def sum(a:Int,b:String) = sum(a, b.toInt)
// (compile error)
// overloaded method sum needs result type
// def sum(a:Int,b:String) = sum(a, b.toInt)
[OK]
def sum(a:Int,b:Int) = a+b
def sum(a:Int,b:String):Int = sum(a, b.toInt)
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