On Wed, 12 Oct 2016 16:31:46 -0500,
Scott Moore wrote:
>     PS: is the documentation for use-once/c somewhere?
> I’ll add it to the docs when I get a chance. You can see the definition
> here:
> https://github.com/thinkmoore/racket-fuse/blob/master/private/filesystem.rkt#L132
> use-once/c is a combinator that takes a procedure contract and makes it
> so that the contracted procedure can only be applied once. Ideally, I’d
> enforce the stronger property that you can use only one of the response
> or error callback for each procedure, but that would have been a bit
> trickier due to the need to attach the contract to two values at once.
> use-once/c is a nod to at least making sure you didn’t reuse them
> between operations...

Any connection to Jesse's affine contracts?



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