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In this video we're going to take a look at some alternate forms of syntax around annotations for functions.

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So underneath my two functions I already have I'm going to define a another one called divide and you'll

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notice I'm going to use the keyword function right here.

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So how do we use these annotations with a function defined with the function keyword.

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Well basically the exact same way.

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So we'll have two arguments A and B and we need to annotate both them.

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So we'll say A is going to be a number and B is going to be a number as well.

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Then to annotate the return type of this again right after the argument list will put in a colon and

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then the type of value we expect to return.

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Then we can return a divided by B.

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Like so now this syntax is going to also work for anonymous functions assigned to variables too.

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So I could say const multiply will be a function.

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This will take two arguments of A and B.

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Once again both numbers and again right after that argument list we can annotate the return type as

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well.

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And so then inside the function A times B like so.

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And that's pretty much it so anytime that we need to define a function using an arrow a named function

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or an anonymous function assigned to a variable we're always going to see a near identical form of syntax

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it's always going to be the arguments that the colon and then the expected type.

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And then immediately after the closing parentheses we'll do another colon and the expected type of the

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return value from the function.

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That's pretty much it.

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Quick pause here and we'll talk about one less thing in the next video.