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Re: enumeration set case syntax

This page is part of the web mail archives of SRFI 113 from before July 7th, 2015. The new archives for SRFI 113 contain all messages, not just those from before July 7th, 2015.

Kevin Wortman scripsit:

> How about a syntax similar to case, that dispatches based on a member of
> an enumeration set, with enumeration-specific error checking?
> Specifically, an error would be signaled if the cases are not
> exhaustive, or if any clause datum is not a member of the enumeration set.

Due to phasing problems, this would only work with enumerations defined
using define-enumeration, and it would be awkward to implement it with
syntax-rules only.  So I regretfully reject it for this SRFI.

I've added a version of the above to the Rationale section.

> Also:
> (enum-set-min integer-set)
> (enum-set-max integer-set)
> should read
> (enum-set-min enum-set)
> (enum-set-max enum-set)

Fixed, thanks.

John Cowan                                cowan@xxxxxxxx
At times of peril or dubitation,          http://www.ccil.org/~cowan
Perform swift circular ambulation,
With loud and high-pitched ululation.