NAME

keys()  -  return an array of the keys from the (key, value) pairs in a
mapping

SYNOPSYS

mixed *keys( mapping m );

DESCRIPTION

keys() returns an array of keys (indices) corresponding to the keys  in
the (key, value) pairs stored in the mapping m.

For example, if:

    mapping m;
    m = (["hp" : 35, "sp" : 42, "mass" : 100]);

then

    keys(m) == ({"hp", "sp", "mass"})

Note:  the  keys  will not be returned in any apparent order.  However,
they will be returned in the same order  as  the  corresponding  values
(returned by the values() efun).

SEE ALSO

values(3), each(3)