Re: Comparing hash table objects

[Ihor Radchenko]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> However, it will not help with the problem of comparing objects
>> containing hash tables. Unless those obejcts also define special
>> comparison function (which is inconvenient).
>
> This is an instance of a fairly general problem with Lisp's equality
> tests (and it's not really specific to Lisp, admittedly).
>
> Maybe a half-sane way to solve this problem is to provide a generic
> "equality driver" which takes an argument specifying which objects to
> compare for structural equality (i.e. where to keep recursing).

This might be an option.
It would then help if cl-defstruct supported a default comparator
setting the "equality driver" to be used by default when comparing the
objects using equal.

Best,
Ihor