Re: [Chicken-users] Re: tcp-read-timeout: procedure or parameter?

[felix winkelmann]

On Mon, Jul 7, 2008 at 10:18 AM, Tobia Conforto <address@hidden> wrote:
>
> Contrary to global variables, parameters are thread-local, so every thread
> has its own set of parameter values.
>
> The combination of these two features makes parameters very useful.
>

Another nice property of parameters is that you can pass them
around by value, sort of like a "location":

(define (change-setting p)
  (p <new value>) ...)

...

(if (stars-are-right?)
  (change-setting first-parameter)
  (change-setting second-parameter) )


cheers,
felix