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exceptionally (Future method)
Last update:
May 18, 2026
If this Future fails, runs a recovery function on the completing thread. On success, the value passes through.
Description
Synchronous counterpart to exceptionallyAsync.
Returns
A new Future.
Category
Asynchronous programming
Function syntax
future.exceptionally(function)Parameters
| Parameter | Description |
|---|---|
| function | Required. A function that takes the exception and returns a recovery value. |
See also
Example
<cfscript>
future = runAsync(function() { throw("error"); });sleep(200);
recovered = future.exceptionally(function(error) { return "fallback";});
writeOutput(recovered.get()); // fallback
</cfscript>
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