Re: cond construct for situation when a variable is t

[Heime]

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------- Original Message -------
On Wednesday, August 23rd, 2023 at 12:10 AM, Emanuel Berg <incal@dataswamp.org> 
wrote:


> Heime wrote:
> 
> > How can I use the 'cond' construct for the case when
> > a variable is 't' ?
> 
> 
> It could look like this but in practice one would probably put
> it in another way, that looks better.
> 
> (setq var nil)
> 
> (cond
> (var 1)
> ((not var) 0) )
> 
> > I can set a variable to boolean true using (setq var t), am
> > I right ?
> 
> 
> You can, you totally can. Just don't `setq' t to anything ;)
> 
> --
> underground experts united
> https://dataswamp.org/~incal

I am getting somewhat confused after your comments Emanuel.  There is no 
'boolean datatype' in elisp.  With nil and empty list () being false, 
anything else is true.  That t is used for true, is that by convention ?
Should t be used, or is it unreliable ?