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setEach
Last update:
Jun 9, 2026
Invokes a callback once per set element (for-in iteration).
Description
Used to iterate over an array and run the function closure for each item in the array.
Returns
Void.
Category
ColdFusion Set helper utilities
Function syntax
setEach(set, callback)Parameters
| Parameter | Description |
|---|---|
| set | Set to iterate. |
| callback | Closure or a function reference that will be called for each of the iteration. |
See also
Example
The following example uses this API in
cfscript (syntax: utils.setEach(set, callback)).
<cfscript>
s = setNew();
s.add(1);
s.add(2);
s.add(3);
s.add(4);
s.add(5);
sum = 0;
setEach(s, function(v) {
sum += v;
});
writeOutput(sum) // 15
</cfscript>
Real-world example
Caching: bump counters per distinct cache key.
<cfscript>
keys = setNew();
keys.add("user:101");
keys.add("user:202");
keys.add("cart:9");
invalidations = 0;
setEach(keys, function (k) {
// pretend: cacheDelete(k) or redis DEL
invalidations += 1;
});
writeOutput(invalidations); // 2
</cfscript>
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