Synopsis Intersection of two lists.
Syntax
Exp1 & Exp2
Types
Exp1 | Exp2 | Exp1 & Exp2 |
|---|---|---|
list[T1] | list[T2] | list[lub(T1,T2)] |
Description Returns the intersection of the two list values of
Exp1 and Exp2, i.e.,
the list value of EXp1 with all elements removed that do not occur in the list value of Exp2.
Examples
rascal>[1, 2, 3, 4, 5] & [4, 5, 6];
list[int]: [4,5]
Questions
Question [1].
When you compute the intersection of two lists, the number of elements in the result is always:
When you compute the intersection of two lists, the number of elements in the result is always:
Question [2].
Question [3].
Question [4].