Ds\Set::intersect
Ds\Set::intersect
(PECL ds >= 1.0.0)
Ds\Set::intersect — Creates a new set by intersecting values with another set.
Description
public Ds\Set Ds\Set::intersect ( Ds\Set $set )
Creates a new set using values common to both the current instance and another set
. In other words, returns a copy of the current instance with all values removed that are not in the other set
.
A ∩ B = {x : x ∈ A ∧ x ∈ B}