Hello all,
How to put an evaluation inside a list, i lost track ;-)
example, the evaluated 'x must be appened to y.
(set 'y '())
(set 'x 1)
(append y (list (eval x))) <-- pitty for me..does not work...
any hint?
Norman.
there are two ways to do this:
(set 'y '()) ;; not strictly necessary
(set 'x 1)
(push x y) => 1 ;; changes y returns x
y => (1)
(cons x y) => (1) ;; returns the new list leaves y unchanged
y => ()
Lutz
ps: note that you also can push on an y which has not a list already, in that case the old contents simply gets replaced by a list with the new element
Hello Lutz,
Thanks, actualy i knew that but im always turning the push variables around.. :-)
But this bring me to the function i needed it for, I was building a function called (pipe-sessions) but I think its better to control this from within the
newlisp core then from a function inside lisp. I dont have direct access to
the pipe IO so it'll be difficult to handle pipes as a function.
Anyway i was seeking for a function called (pipe-sessions) that would display/updated all opened pipes. If you think its usefull it would be a nice to have function, eventualy pipes are sockets so i assume the net-.... will
work on the pipes too?
Norman.
There is a 'pipe' function in newLISP, you could use this to create your pipes and it returns the 2 handles in a list, you could make a list of those and handle it from there.
net-seesions only registers handles opened via socket calls.
Lutz
Hello Lutz,
yes that was what i was building ;-)
Norman.