Hi there,

       I'd like to know whether operator[][] is a part of C++. It should be
   a part of C++ because, it does not mutate the language definition.
   In case it is so, please tell me how to define operator[][]...[].

    Please send your mail to:-
    cdacgrp@kailash.cse.iitb.ernet.in

     Thank you
     (Kamal)

In article <1993Mar29.142040.24182@cse.iitb.ernet.in>, cdacgrp@cse.iitb.ernet.in (CDACProject) writes:
|>
|>      Hi there,
|>
|>        I'd like to know whether operator[][] is a part of C++. It should be
|>    a part of C++ because, it does not mutate the language definition.
|>    In case it is so, please tell me how to define operator[][]...[].
|>
|>     Please send your mail to:-
|>     cdacgrp@kailash.cse.iitb.ernet.in
|>
|>      Thank you
|>      (Kamal)
|>
operator[][] is NOT part of c++. However you CAN use double subscripting. Essentially an expression like a[b][c] is treated like:

(a.operator[](b)).operator[](c)

or (a[b])[c]

In other words a[b] must mean something for which [] is a valid operator.

In article <1993Mar29.142040.24182@cse.iitb.ernet.in> cdacgrp@cse.iitb.ernet.in (CDACProject) writes:
|       I'd like to know whether operator[][] is a part of C++.

operator[][] is not a part of C++, because '[][]' is not a C++
operator.  operator[](sometype) is a part of C++ because '[]' is
a part of C++.  The effect of operator[][] -- if it were to
exist -- can be simulated by writing operator[] to return a
reference or pointer to an array-like object that in turn has
an operator[] defined for it.  Good C++ texts should cover
this issue.