Re: [Chicken-users] dynamic scoping

[Kon Lovett]

Sadly, John Cowan's fine table of SRFI support by implementation doesn't cover 
SRFI 15.

In practice real dynamic variables - parameters - are the way to go for library 
or other distributed code. & they are in R7RS!

On Jun 26, 2013, at 3:01 PM, Dan Leslie <address@hidden> wrote:

> Oh you just had to be different. ;)
> 
> The related SRFI is withdrawn, is it safe to assume that fluid-let will be 
> available outside of Chicken?
> 
> -Dan
> 
> On 6/26/2013 2:56 PM, Kon Lovett wrote:
>> See http://api.call-cc.org/doc/chicken/special-forms#def:fluid-let
>> 
>> #;1> (define a 1)
>> #;2> (define (add x) (+ x a) )
>> #;3> (let ((a 100) ) (add 10) )
>> 11
>> #;4> (fluid-let ((a 100) ) (add 10) )
>> 110
>> 
>> 
>> On Jun 26, 2013, at 2:47 PM, "Daniel Ajoy" <address@hidden> wrote:
>> 
>>> "add" binds a to 1 at the moment of definition.
>>> 
>>> #;48> (define a 1)
>>> #;49> (define (add x) (+ x a) )
>>> #;50> (add 10)
>>> 11
>>> #;51> (let ((a 100) ) (add 10) )
>>> 11
>>> 
>>> Is there a way to give a different value of "a" to add, so that, something 
>>> like this happens:
>>> 
>>> (let ((a 100) ) (add 10) )
>>> 110
>>> 
>>> Daniel
>>> 
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