new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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TanStack Query · Reference · all subjects

infinitequeryobserver

3 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

InfiniteQueryObserver constructor and subscribe

InfiniteQueryObserver is instantiated with new InfiniteQueryObserver(queryClient, options). It can be used to observe and switch between infinite queries. The constructor takes a queryClient and an options object. The subscribe method accepts a callback function that receives the query result and returns an unsubscribe function.

InfiniteQueryObserver options match useInfiniteQuery

The options for InfiniteQueryObserver are exactly the same as those of useInfiniteQuery.

InfiniteQueryObserver example with queryKey and queryFn

const observer = new InfiniteQueryObserver(queryClient, { queryKey: ['posts'], queryFn: fetchPosts, getNextPageParam: (lastPage, allPages) => lastPage.nextCursor, getPreviousPageParam: (firstPage, allPages) => firstPage.prevCursor, }) const unsubscribe = observer.subscribe((result) => { console.log(result) unsubscribe() })

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