[r6rs-discuss] [Formal] SRFI-39 should be made an R6RS library

[John Cowan]

Michael Sperber scripsit:

> As Scheme generally tries to avoid piling feature upon
> feature, it's a better strategy to offer the building blocks and let
> people build the parameter mechanism they want from them.

That, no doubt, is why R5.92RS has three different record packages and
all kinds of numbers.  At least they *are* piled one on another
instead of being fundamentally incompatible.

How parameters are to be implemented depends on fundamental factors
of a Scheme implementation that are outside the R*RS purview, notably
whether there are primitive threads and how they work.  As such,
I still think it's important to standardize the interface to this
widely provided feature.

-- 
John Cowan
        cowan at ccil.org
                I am a member of a civilization. --David Brin