创建一个带2个参数（myVar1和myVar2）的函数，它们都是字符串
function myFunc(@(6): @(6), @(6): @(6)) { return(myVar1 + myVar2); }
function myFunc(myVar1: string, myVar2: string) { return(myVar1 + myVar2); }
function myFunc(myVar2: string, myVar1: string) { return(myVar1 + myVar2); }