selectedOption may not be defined so you need to account for that in your render method, but that's about the same as every time you're fetching data in a react component.
The computation of the options is a good use case for useMemo. selectedOption could use it as well, though for both it remains an optimisation and wouldn't make a difference in most cases.
This code will render with selectedOption as null for the render before the one scheduled by the effect. What if you can't do this? You will need to add something like:
In my previous comment: selectedOption may not be defined so you need to account for that in your render method.
Defaulting it to the first option works as well. One could argue that the source of truth should be the id in state so you might wanna wait until the state has been updated and until then render something else (likely all this will be too fast to be noticeable by the user), though in the end I guess it's about the same.
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The code does not need to be so verbose, it boils down to:
selectedOption
may not be defined so you need to account for that in yourrender
method, but that's about the same as every time you're fetching data in a react component.The computation of the options is a good use case for
useMemo
.selectedOption
could use it as well, though for both it remains an optimisation and wouldn't make a difference in most cases.This code will render with
selectedOption
as null for the render before the one scheduled by the effect. What if you can't do this? You will need to add something like:In my previous comment:
selectedOption may not be defined so you need to account for that in your render method.
Defaulting it to the first option works as well. One could argue that the source of truth should be the id in state so you might wanna wait until the state has been updated and until then render something else (likely all this will be too fast to be noticeable by the user), though in the end I guess it's about the same.