Addition with generic type parameter in Scala
scala
Solution
`A` could be any type in this case. `x + y` means `x.+(y)`, which would only compile if either a) the type `A` had a method `+`, or b) the type `A` was implicitly convertible to a type with a method `+`.
The type `scala.Numeric` provides the ability to write code that abstracts over the numeric system -- it could be called with Double, Int, or even your own exotic numeric system, such as complex numbers.
You can add an implicit parameter to your method of type `Numeric[A]`.
object GenericTest extends Application {
def func1[A](x: A, y: A)(implicit n: Numeric[A]): A = x + y
}
In Scala 2.8, this can be shortened:
object GenericTest extends Application {
def func1[A: Numeric](x: A, y: A): A = x + y
}
Problem
Hi I am new to scala and trying to write addition program in with generic type parameter as shown below ``` object GenericTest extends Application { def func1[A](x:A,y:A) :A = x+y println(func1(3,4)) } ``` But this does not work .What mistake i am making .