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You might get a cut in exercise to implement the range.

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What does it have a mean?

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It is a helper function, which looks like this.

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For example, if we are calling the range from one to 50, it will generate force energy one two, three

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four, five six and so on until 15.

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And this is actually a really nice helper when you need to generate some data, for example, you want

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to generate 50 random users.

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In this case, you simply generate such array and then for every single element you mapping in your

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random user.

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This is why this helper exists in almost all helper libraries like, for example, a dash or render.

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And obviously the easiest solution without thinking here is by using for loop, this is where you can

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ride this function like this, you have a function range and you have here start and end, for example,

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from one to 50 and then inside, we must try to follow up from start point to the end point.

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This is why here let I equals time.

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So we're not starting from zero, but from start here we're right and I less or equal end.

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And here we are making A-plus plus now inside this four loop, we must push every single index to our

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result.

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This is body.

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Let's create our let result.

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This is our array.

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Now inside, we can write results, push and we're pushing here our eye, and now we just return our

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result.

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This is how you can build the range function by using for Loop Let's Chicken Browser.

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I am right in here range function one comma 50 and we're getting our array from one to 50, which means

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our code is completely fine, but it is super low level and we can make it better.

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More advanced level is to leverage our rate so we can write in browser array and then our end, for

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example.

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50.

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And as you can see, this returns fast AMP territory where we have reserved 50 elements and what we

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can write after this dot keys.

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And now we are just calling this keys and we get an array iterate.

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Now, if we will try to spread this reiterate inside array, as you can see, we're getting our 50 keys

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starting from zero to 49.

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And after this, we simply need to map every single element and add our start point to it.

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So here we can write that map.

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And here we have every single element and where right?

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And Element plus tard in our case, for example, +1 and we're getting exactly the same outcome.

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This is an array from one to 50.

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This is why this variant is a little bit more advanced.

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So here we can create our range function and we're getting here, start and end.

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And now inside, we want to return this logic.

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And as you can see, this is an array where we are provided and we're making keys and we're spread in

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this array traitor inside our own USA and we're in every single element and we're adding here our start

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point.

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Let's reload the page and check if it's working.

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So I'm passing inside our range function one and 50, and we're getting a nice array from one to 15.

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And this is how people typically write this function inside help libraries.

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For example, Lambda Olivet.