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acceptEither
Last update:
May 18, 2026
When either this Future or another Future completes successfully first, runs a consuming action on the completing thread with the winning value.
Description
acceptEither is an instance method on a CFML Future. You pass a second Future to race. Whichever stage completes successfully first passes its value to your action. The action runs on the completing thread and performs a side effect (void semantics). A new Future is returned for chaining.
This is the synchronous counterpart to acceptEitherAsync.
Returns
A new Future.
Category
Asynchronous programming
Function syntax
future.acceptEither(other, action)Parameters
| Parameter | Description |
|---|---|
| other | Required. The other Future to race. |
| action | Required. A function that accepts the first completed value and performs work (void semantics). |
Example
Record the first successful result.
<cfscript>
f1 = runAsync(function() { return "winner"; });
f2 = runAsync(function() {
sleep(1000);
return "loser";
});
either = f1.acceptEither(f2, function(x) {
variables.winner = x;
});
either.get();
writeOutput(variables.winner); // winner
</cfscript>
See also
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