Return the cached item if it exists else spawn a task to update it (doing nothin... | Hacker News

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		duped 44 days ago \| parent \| context \| favorite \| on: Async Mutexes Return the cached item if it exists else spawn a task to update it (doing nothing if the task has already been spawned), await the task and return the cached item.

never_inline 44 days ago [–]

Thanks, that's a useful trick.

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