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intersection
Last update:
May 18, 2026
Returns the intersection of this set and another set.
Description
Returns the intersection of two sets. The output is only elements present in both sets.
Returns
A new Set.
Category
ColdFusion Set member methods
Function syntax
set.intersection(otherSet)Parameters
| Parameter | Description |
|---|---|
| otherSet | Another Set. |
See also
Example
The following example uses this API in
cfscript (syntax: set.intersection(otherSet)).
<cfscript>
setA = setNew();
setA.add(1);
setA.add(2);
setA.add(3);
setB = setNew();
setB.add(2);
setB.add(3);
setB.add(4);
intersectionSet = setA.intersection(setB);
writeOutput(intersectionSet.size()); // 2 (2 and 3)
</cfscript>
Real-world example
Screen candidates: required job skills intersect candidate skills.
<cfscript>
requiredSkills = setNew();
requiredSkills.add("SQL");
requiredSkills.add("CFML");
requiredSkills.add("REST");
candidateSkills = setNew();
candidateSkills.add("CFML");
candidateSkills.add("HTML");
candidateSkills.add("SQL");
matched = requiredSkills.intersection(candidateSkills);
writeOutput(matched.size()); // 2 — overlap for screening
</cfscript>
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