swift3.0 泛型 <T> 小例子

贡献者:赵大财
博客:https://my.oschina.net/zhaodacai
GitHub:https://github.com/zhaodacai

func swapTwoInts <T> ( a:inout T,b:inout T) {
        let temp = a
        a = b
        b = temp
    }
    
    var someInt = 1
    var anotherInt = 5
    var someString = "some"
    var anotherString = "another"
    swapValue(someInt,anotherInt)
    swapValue(&someString,&anotherString)