Re: [Gimp-user] reading from txt file

[Simon Budig <simon budig de>]

Hi.

charlysangel (forums gimpusers com) wrote:
> I've tried to read from file with code below
>
> (let* ((fd (fopen filename)))
>    (let*    (
>       (c (fread 1 fd))
>       (res "")
>       )
>    (while (and c (not (equal? c " ")))
>       (set! res (string-append res c))
>       (set! c (fread 1 fd)))
>       (if (equal? res "")
>          ()
>          (cons (string->number res) ())
>       )
>    )
>    (gimp-message (string-append "PosX: " (number->string res)))
> )
>
> I do not understand why it returns :"Error: eval: unbound variable: res "

The inner let*-Block declaring the "res" variable is closed in the line
immediately before the gimp-message call.

Hence "res" is no longer available when evaluating the line with
gimp-message, resulting in the error message you see.

Bye,
         Simon
-- 
              simon budig de              http://simon.budig.de/