Find the first item in slice which is not contained in values.
Comparable to strspn in the C standard library.
pub fn findNone(comptime T: type, slice: []const T, values: []const T) ?usize
pub fn findNone(comptime T: type, slice: []const T, values: []const T) ?usize {
return findNonePos(T, slice, 0, values);
}