Was bedeutet diese Codezeile?

[himitsu]

Zitat von Codehunter:

Einfach herrlich

Code:

Operator    Operation      Operand types   Result type   Example
+          union          set             set           Set1 + Set2
-          difference     set             set           S - T
*          intersection   set             set           S * T
<=          subset         set             Boolean       Q <= MySet
>=          superset       set             Boolean       S1 >= S2
=           equality       set             Boolean       S2 = MySet
<>          inequality     set             Boolean       MySet <> S1
in          membership     ordinal, set    Boolean       A in Set1