On 29.03.19 12:11, David Kastrup wrote:
Pedro Pessoa <pedrops...@gmail.com> writes:
Hello,
I want to init a variable only if it isn't bound. This seems a simple
matter, I was surpised I couldn't do it.
The thing is that it throws an 'unbound variable error' with anything I try.
I imagined something like:
%%% pseudo
#(define var
(not (is-bound? var) 0))
%%%
var = 0
Does it need to be in Scheme?
The difference is that
var = 0
overwrites any previous binding, and I guess that’s what Pedro wanted to
avoid. (?)
Best, Simon
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