Richard, as the oldest Schemer around with an advisor nicknamed "Lispman", I used two load-based scripts like that until a couple of years ago. I rewrote it all with require and it turned out to be the right kind of improvement. It was all easier to manage.
I also used load like this for years to get into students' programs and to supply them with libraries. It seems to work in a way that no other language can provide libraries. And in a sense, teachpacks aren't close but I figured out ways to cope. This second use case is good if you send things 'over the wire'. But again, I'd rather write a library function that reads and evals -- in exactly the sandbox I want if I had to do this. It's more secure than running raw load. -- Matthias On Jul 23, 2010, at 9:58 PM, Richard Cleis wrote: > Given a file of "some-scheme.rxt": > > ********************* > ;#lang racket > > (define a-var 'a-val) > ********************* > > and a program in a definitions window: > > ********************* > #lang racket > > (define (f) (load "some-scheme.rkt")) > ;(f) > ********************* > > ... Entering (f) in the interactions window defines a-var. > > If the comment is removed from ;#lang racket, a-var is not defined. Where > did it go? > > If the comment is removed from ;(f), an 'unbound identifier' error is > triggered during the Run. [(f) still works in the interactions window.] Which > identifier is unbound? > > How can I explain where (load) evaluates it's contents? > > Does (load) have a future in racket? > > rac > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
