bool :sneq ( mixed $ARG , … )
bool :!== ( mixed $ARG , … )

Takes any number of arguments and performs a strict-non-equals comparison between them. This means that no type conversions are performed; values of different types are considered non-equal. This holds true even for integer subtypes - i255 and hFF are :sneq unequal.
In practice, works the same as if performing a chained :not :seq call.

# :sneq example.
:set &STR s'123'
:set &NUM i123
:writeln s'STR and NUM are ' (:fork (:neq $STR $NUM) s'unequal' s'equal') s' (loose).'
:writeln s'STR and NUM are ' (:fork (:sneq $STR $NUM) s'unequal' s'equal') s' (strict).'