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setAddAll
Last update:
May 18, 2026
Adds all elements from the source set into the target set.
Description
Bulk adds all elements from one set to another. The target set grows to include evey element from the source set. Duplicates are ignored.
Returns
Void
Category
ColdFusion Set built-in functions
Function syntax
setAddAll(targetSet, sourceSet)Parameters
| Parameter | Description |
|---|---|
| targetSet | Set to mutate. |
| sourceSet | Elements to add. |
See also
Example
The following example uses this API in
cfscript (syntax: setAddAll(targetSet, sourceSet)).
<cfscript>
a = setNew();
a.add(1);
b = setNew();
b.add(2);
b.add(3);
setAddAll(a, b);
writeOutput(a.size()); // 3
</cfscript>
Real-world example
Merge IDs from multiple query batches into one accumulator set for pagination.
<cfscript>
function accumulateIds(required any accumulator, required any batch) {
setAddAll(accumulator, batch);
return accumulator;
}
all = setNew();
batch1 = setNew();
batch1.add("id-100");
batch1.add("id-200");
batch2 = setNew();
batch2.add("id-200"); // duplicate across batches
batch2.add("id-300");
accumulateIds(all, batch1);
accumulateIds(all, batch2);
writeOutput(all.size()); // 3
</cfscript>
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