On Wed, Apr 13, 2011 at 2:15 PM, Alexander Burger <a...@software-lab.de> wrote: > Hi Edwin, > >> if i understand correctly, (====) when called outside a method works >> only when a file is (load)ed? > > I'm not sure what you mean here. Isn't that the case for _any_ function?
check. i realized this after sending my first email. > > To my understanding '====' is a normal function, which clears the > transient symbol table as a side effect. right. again, more insight. only the transient table is cleared, but the transient symbols themselves are left alone. additionally, the reference says: That means, a transient symbol cannot be accessed then by its name, and there may be several transient symbols in the system having the same name. i had a hard time understanding this until i checked the source, which just wipes out the transient hash table but leaves the heap alone. > > > >> replying to myself, wrote a test... >> >> (de test1 () >> (if (not (num? "ctr")) >> (setq "ctr" 1) >> (inc '"ctr") >> ) >> (prinl "ctr") >> (====) >> ) >> >> (test1) >> (test1) >> (prinl "ctr") >> >> did a face palm and tells myself "that's how a static behaves in C!". >> did that explain that right? > > Yes, exactly. > > 'test1' will always refer to "ctr", even if it is gone out of visibility > (transient scope) for the outside world. > after writing the test (damn, i should be writing more tests rather than asking...), reading the C code and reading and re-reading the reference i now have a clearer picture of how transient symbols are used. this is just part of unlearning i think. elegance! thank you Alex for sharing all of this. (wishful thinking: alternative syntax for representing transient symbols without embedded spaces. maybe something like \xxx) /e -- UNSUBSCRIBE: mailto:firstname.lastname@example.org?subject=Unsubscribe