andre/30-seconds-of-code
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Rename articles prefixed with js-

Browse Source
This commit is contained in:
Angelos Chalaris
2023-05-18 23:29:52 +03:00
parent 2e31d65a39
commit 00f280bd16
63 changed files with 51 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
snippets/js/s/iterators.md
View File

@ -54,7 +54,7 @@ for (let item of myList) {
}
```
In the above example, we implement a [`LinkedList` data structure](/articles/s/js-data-structures-linked-list), that internally uses a `data` array. Each item in it has a `value` and some implementation-specific properties used to determine its position in the sequence. Objects constructed from this class are not iterable by default. To define an iterator we use `Symbol.iterator` and set it up so that the returned sequence is in order based on the internal implementation of the class, while the returned items only return their `value`.
In the above example, we implement a [`LinkedList` data structure](/js/s/data-structures-linked-list), that internally uses a `data` array. Each item in it has a `value` and some implementation-specific properties used to determine its position in the sequence. Objects constructed from this class are not iterable by default. To define an iterator we use `Symbol.iterator` and set it up so that the returned sequence is in order based on the internal implementation of the class, while the returned items only return their `value`.
On a related note, iterators are just functions, meaning they can be called like any other function (e.g. to delegate the iteration to an existing iterator), while also not being restricted to the `Symbol.iterator` name. This allows us to define multiple iterators for the same object. Here's an example of these concepts at play: