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Welcome back.

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How did you do?

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If you had any trouble, don't worry.

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We're going to walk through how to
rewrite each of these functions

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with arrow syntax right now.

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Let's with the first one, addToTen.

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This is a simple function that receives
parameter num, adds num to 10 and

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then returns the sum.

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To begin,

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let's first replace the function keyword
with variable declaration keyword, const.

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Then we add an equal sign, followed by
the parameter that we're passing in.

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But remember, because we're
only passing in one parameter,

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we don't need to enclose
it in parentheses.

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After the parameter we type our arrow
which points to the code inside our

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function.

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Since this function only
includes one line of code,

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we don't need our curly braces and
the entire expression can go on one line.

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We also don't need the return
key word because arrow functions

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will implicitly return the value
of one line functions.

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That was a lot to take in.

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If there were some things you didn't
understand there, no worries.

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I recommend going back and
reviewing the create functions using arrow

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syntax section of this course,
before trying again.

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For our second function,
divideUs, I'm gonna go ahead and

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copy in my solution to this function.

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The process for

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converting this function declaration
to an arrow function expression,

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is almost exactly the same as our first
example, except for one difference.

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Do you know what it is?

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Yep, you got it.

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This function receives two parameters, so
they have to be enclosed with parentheses.

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Here's my solution for
our final function, printMyName.

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Unlike the last two examples,
this function doesn't take any parameters.

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Even so, we still have to notate this by
including an empty set of parentheses

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after the equals sign.

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Also, because this function
contains two lines of code,

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we have to keep our curly braces.

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So there you have it.

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You just converted three regular
function declarations to

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arrow function expressions.

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Great job.

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Let's move on now to our second file,
refactor.js.

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Inside this file, there are three
functions written with arrow syntax.

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Your goal for this part of
the practice session, is to try and

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refactor these functions so they are as
short and concise as the syntax allows.

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Just a hint, one of these might
already be as concise as possible.

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Give this a go and we'll regroup
later to go over the solution.