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isSupersetOf
Last update:
Jun 9, 2026
Returns true if this set contains every element of the other set.
Description
Returns true if this set contains every element of the other set (that is, this set is a superset of other: A ⊇ B). Equivalent perspective: other.isSubsetOf(this).
Returns
Boolean.
Category
ColdFusion Set member methods
Function syntax
set.isSupersetOf(otherSet)Parameters
| Parameter | Description |
|---|---|
| otherSet | Potential subset. |
See also
Example
The following example uses this API in
cfscript (syntax: set.isSupersetOf(otherSet)).
<cfscript>
setA = setNew();
setA.add(1);
setA.add(2);
setA.add(3);
setA.add(4);
setB = setNew();
setB.add(2);
setB.add(3);
writeOutput(setA.isSupersetOf(setB)); // true
writeOutput(setB.isSupersetOf(setA)); // false
</cfscript>
Real-world example
Admin role permissions must be a superset of moderator permissions.
<cfscript>
moderatorPerms = setNew();
moderatorPerms.add("POST_EDIT");
moderatorPerms.add("USER_WARN");
adminPerms = setNew();
adminPerms.add("POST_EDIT");
adminPerms.add("USER_WARN");
adminPerms.add("USER_BAN");
adminPerms.add("SITE_CONFIG");
writeOutput(adminPerms.isSupersetOf(moderatorPerms)); // true
</cfscript>
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