如何使用泛型比较两种类型的大小

Question

I want to define a method to compare stuff such as int or double etc, using Generics. But I'm having this error:

Binary operator '>' cannot be applied to two 'T' operands.

Here's my code, how can I make it work?

func test<T:Numeric>(a: T,b:T)-> T{
    return a > b ? a : b
}

I have solved by:

 func test<T:Comparable>(a: T, b: T)-> T {
    return a > b ? a : b
}

Answer 1

The > operator requires conformance to Comparable

func test<T : Comparable>(a: T, b: T) -> T {
    return a > b ? a : b
}

However the function already exists in the Swift Standard Library and is called max