Hi,

In message "Re: How to test for existence of instance variable?"
    on 03/02/20, Brian Candler <B.Candler / pobox.com> writes:

|I want a general method to add a member to the class dynamically, so if
|there were
|    Struct#add_member
|I would happily use it.

Ah, probably you have misunderstood Ruby's Struct.  It is a fixed
array with symbolic index.  Members should *not* be added dynamically.
Use Objects and attributes instead for dynamic slots.

							matz.