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thenCombine
Last update:
May 18, 2026
When this Future and another Future both complete normally, runs a combiner on the completing thread with both results.
Description
thenCombine is an instance method on a CFML Future. You pass a second Future (other) and a combining function. When both stages complete successfully, the combiner runs on the completing thread and returns one new value. The method returns a new Future that completes with that combined value.
This is the synchronous counterpart to thenCombineAsync.
Returns
A new Future.
Category
Asynchronous programming
Function syntax
future.thenCombine(other, function)Parameters
| Parameter | Description |
|---|---|
| other | Required. The other Future to wait for. |
| function | Required. A function that accepts both results (this stage first, then other) and returns the combined value. |
Example
Add two async results after both complete.
<cfscript>
f1 = runAsync(function() { return 10; });
f2 = runAsync(function() { return 20; });
combined = f1.thenCombine(f2, function(x, y) { return x + y; });
writeOutput(combined.get()); // 30
</cfscript>
See also
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