This is just another case of there being more than one way to do it. No matter what you have to do, you could find a way to do it without tie. But since tie is there, you can use it if you want, you think it makes sense, or it saves you some work.

One might also say, "we already have a for loop which would allow us to iterate a variable over an array's indices," and then ask, "what good is a foreach loop?"

-sauoq
"My two cents aren't worth a dime.";