Re: 7 logical-xor implementations in source tree

[Philippe Schnoebelen]

On 2019/07/25 14:07, Mattias Engdegård wrote:
> 25 juli 2019 kl. 01.44 skrev Basil L. Contovounesios <address@hidden>:
>
>
> bool-equal, bool-equiv, bool=, bool-eq are all fine as far as I'm concerned. 
> `xnor' and `nxor', not so much.
> Racket has `boolean=?', but presumably it only copes with #t/#f.
> I'll be using `equiv' as placeholder below for brevity.

I like the name `iff'  for this function.


>>> - There's no use for it, currently.  If we can't find any use for it,
>>>  I'm not sure it deserves to be in subr.el.

I use the function a lot in ert tests, like in

      (should (iff (null somelist) (zerop (length somelist))))

--phs