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added async.value for "eventually" collecting the value of a function that can return nothing for a while (eg querying another thread or whatever). not particularly happy with the name, await is probably a loaded term though

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Max Cahill 2023-10-12 16:15:15 +11:00
parent 24913f05b8
commit f091c89893
1 changed files with 12 additions and 0 deletions
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12
async.lua
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@ -191,6 +191,18 @@ function async.wait(time)
end end
end end
--eventually get a result, inline
-- repeatedly calls the provided function until it returns something,
-- stalling each time it doesn't, returning the result in the end
function async.value(f)
local r = f()
while not r do
async.stall()
r = f()
end
return r
end
--make an iterator or search function asynchronous, stalling every n (or 1) iterations --make an iterator or search function asynchronous, stalling every n (or 1) iterations
--can be useful with functional queries as well, if they are done in a coroutine. --can be useful with functional queries as well, if they are done in a coroutine.
function async.wrap_iterator(f, stall, n) function async.wrap_iterator(f, stall, n)