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useEffect does NOT warranty that it will not re-render when dependencies have not changed. useMemo is the one that does not fire when dependencies have not changed. I have never had issue of extra re-renders on useMemo, contrary to useEffect that sometimes re-renders when dependencies have not changed. Instead, you want to watch out for the fact that useMemo struggles to detect some changes in some dependencies that are complex in structure. (for example, a change in an object that is inside of an array).

GiselleMtnezS
– GiselleMtnezS

2022-12-16 16:58:01 +00:00
Commented Dec 16, 2022 at 16:58

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Correct minor typos or mistakes
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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>

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