String search
x ss y ss[x;y]
Where
x is a stringy is a pattern as a string (no asterisk)returns an int vector of position/s within x of substrings that match pattern y.
q)"We the people of the United States" ss "the"
3 17
q)s:"toronto ontario"
q)s ss "ont"
3 8
q)s ss "[ir]o"
2 13
q)s ss "t?r"
0 10