jeena/en.javascript.info
1
0
Fork 0
Code Issues Pull requests Projects Packages Wiki Activity Actions

Merge pull request #1292 from Violet-Bora-Lee/patch-26

Browse source 
minor
This commit is contained in:
Ilya Kantor 2019-08-30 23:05:40 +03:00 • committed by GitHub
commit b0d39f8568
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
1-js/05-data-types/08-weakmap-weakset/article.md
View file

@ -155,7 +155,7 @@ We can avoid it by switching to `WeakMap` instead:
```js
// 📁 visitsCount.js
let visitsCountMap = new WeakMap(); // map: user => visits count
let visitsCountMap = new WeakMap(); // weakmap: user => visits count
// increase the visits count
function countUser(user) {
@ -164,7 +164,7 @@ function countUser(user) {
}
```
Now we don't have to clean `visitsCountMap`. After `john` object becomes unreachable by all means except as a key of `WeakMap`, it gets removed from memory, along with the information by that key from `WeakMap`.
Now we don't have to clean `visitsCountMap`. After `john` object becomes unreachable by all means except as a key of `WeakMap`, it gets removed from memory, along with the information by that key from `WeakMap`.
## Use case: caching