Update and rename factoryWithSeed.md to generateItems.md

snippets/factoryWithSeed.md

@@ -1,22 +0,0 @@
----
-title: factoryWithSeed
-tags: array,beginner
----
-
-Generates the given amount of objects based on the given factory, which receives a unique seed.
-
-- Creates a new array of size `amount`.
-- Fills it with some value to be able to iterate over it via `map`.
-- Uses `map`'s second argument, the index, as a seed for the factory.
-
-```js
-const factoryWithSeed = (amount, factory) =>
-  Array(amount) // create array with so many empty slots
-   .fill(0) // fill them to be able to iterate
-   .map((_, i) => factory(i)) // use index as seed
-```
-
-```js
-const mockData = factoryWithSeed(5000, seed => ({ id: seed, name: randomAlphaNumeric(10) }));
-// 5000 items with unique IDs
-```

snippets/generateItems.md

@@ -0,0 +1,16 @@
+---
+title: generateItems
+tags: array,function,intermediate
+---
+
+Generates an array with the given amount of items, using the given function.
+
+- Use  `Array.from()`  to create an empty array of the specific length, calling `fn` with the index of each newly created element.
+
+```js
+const generateItems = (n, fn) => Array.from({ length: n }, (_, i) => fn(i));
+```
+
+```js
+generateItems(10, Math.random); // [0.21, 0.08, 0.40, 0.96, 0.96, 0.24, 0.19, 0.96, 0.42, 0.70]
+```