Query regarding Operator Overloading in Scala

Question

Hi,

I tried to create a function of "+", so after creating while calling the function showing below error. Could you please help me out?

scala> def +(FirstValue: Int, SecondValue: Int): Int = FirstValue+SecondValue

$plus: (FirstValue: Int, SecondValue: Int)Int

scala> +(2,5)

<console>:24: error: value unary_+ is not a member of (Int, Int)

       +(2,5)

       ^

Answer 1

All prefix operators' symbols are predefined: +, -, ~, !. The Scala parser treats these symbols at the beginning of expressions always as unary operators regardless of the real presence of corresponding methods "unary_x". But there is a  workaround for this. Refer the below screenshot