method
&
![Some documentation Importance_1](https://d2vfyqvduarcvs.cloudfront.net/images/importance_1.png?1349367920)
&(p1)
public
<a href="/ruby/Set">Set</a> Intersection—Returns a new array containing elements common to the two arrays, with no duplicates.
[ 1, 1, 3, 5 ] & [ 1, 2, 3 ] #=> [ 1, 3 ]
&(p1)
public
<a href="/ruby/Set">Set</a> Intersection—Returns a new array containing elements common to the two arrays, with no duplicates.
[ 1, 1, 3, 5 ] & [ 1, 2, 3 ] #=> [ 1, 3 ]