Return an array of all possible values from indexing the value
x .
For strings an array of int with the ISO10646 codes of the
characters in the string is returned.
For a multiset an array filled with ones (1
) is
returned.
For arrays a single-level copy of x is returned.
For mappings the array may contain any value.
For objects which define lfun::_values() that return value
is used.
For other objects an array with the values of all non-protected
symbols is returned.