Methods that take function parameters—the Kotlin way

- [Instructor] So we've already written…this part here, effectively.…That is what's now in our utilities,…and I guess the obvious thing to point out here,…was we didn't need to start referencing interfaces…that we are implementing.…We just define it as a standard function.…So that is definitely something…that's much easier to create.…Let's now go and build the equivalent of this,…apply some function to a string.…And in fact, I think I'm going to copy this,…and then we'll create a new Kotlin file here,…which we'll call Kotlin examples,…and we're going to create that function in here.…

Now I'm going to paste it in,…but not convert it to Kotlin,…just so we've got something we can refer to…and we'll now change this round to be the Kotlin equivalent.…Well, the first thing of course,…is we don't need the key words public and static.…So, we can get rid of those.…This is the return type, so we'll put that at the end,…with a colon before it.…And we'll need the keyword fun in the beginning,…to say this is a function.…And then, our function's taking two parameters,…