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Update docs to explain dependent fetching with falsy #449

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Jun 11, 2020
Merged

Update docs to explain dependent fetching with falsy #449

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Update docs to explain dependent fetching with falsy
joshkel Jun 10, 2020
4c402b2
Update README.md
joshkel Jun 10, 2020
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8 changes: 4 additions & 4 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -250,10 +250,10 @@ SWR also allows you to fetch data that depends on other data. It ensures the max
function MyProjects () {
const { data: user } = useSWR('/api/user')
const { data: projects } = useSWR(() => '/api/projects?uid=' + user.id)
// When passing a function, SWR will use the
// return value as `key`. If the function throws,
// SWR will know that some dependencies are not
// ready. In this case it is `user`.
// When passing a function, SWR will use the return
// value as `key`. If the function throws or returns
// falsy, SWR will know that some dependencies are not
// ready. In this ready. In this case it is `user`.
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if (!projects) return 'loading...'
return 'You have ' + projects.length + ' projects'
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