Re: [racket-users] Consulting parameters in #lang web-server servlets

Ok, I think I've got it, but just to make sure I'm not missing any subtleties, or else for the benefit of posterity, here's the version with thread cells. In "common.rkt": #lang racket (provide my-val call-with-my-val) (define cell:my-val (make-thread-cell #f #t)) (define (my-val)

Re: [racket-users] Consulting parameters in #lang web-server servlets

On Thu, Jun 22, 2017 at 10:21 AM, Philip McGrath wrote: > I've come up with a (relatively) minimal example. > > In "common.rkt": >> >> #lang racket >> (provide my-param) >> (define my-param >> (make-parameter #f)) > > > In "servlet.rkt": >> >> #lang web-server >>

Re: [racket-users] Consulting parameters in #lang web-server servlets

I've come up with a (relatively) minimal example. In "common.rkt": > #lang racket > (provide my-param) > (define my-param > (make-parameter #f)) In "servlet.rkt": > #lang web-server > (require "common.rkt") > (provide start) > (define (start req) > (response/xexpr >`(html (head (title

Re: [racket-users] Consulting parameters in #lang web-server servlets

Hi Philip, I think I'd have to see more code to really tell what the problem is, but here are some thoughts: - A continuation captures the values of parameters at the time it is captured. So, if your parameterize is outside of the dispatcher that calls the continuation, then the code inside the

[racket-users] Consulting parameters in #lang web-server servlets

I'm encountering some strange behavior when using parameters with my (stateless) web servlets. I want to check the value of a cookie every time a request is made to my server and make a Racket value derived from the cookie's value available for use within the servlet code. Since this value