in
In
x in y
The in primitive tells if x is present in y, giving 1 for present and 0 for not present.
The in primitive is left atomic.
1 3 7 in 1 2 3 4 5 1 1 0
The in primitive tells if x is present in y, giving 1 for present and 0 for not present.
The in primitive is left atomic.
1 3 7 in 1 2 3 4 5 1 1 0