Re: [Scheme-reports] R7RS-small draft ratified by Steering Committee

[Alex Shinn <alexshinn@x>]

On Sat, Jul 12, 2014 at 10:18 AM, John Cowan <cowan@x> wrote:

Sanel Zukan scripsit:

> Is this means that we are no longer allowed to write and support
> someting like:
>
> (define (1+x x) (+ 1 x))
>
> ?

If you are an implementer, you certainly can provide such a procedure.

If you are a user, and you care about standards conformance,
you should choose a different identifier, as 1+x has never been a
standards-conformant identifier under *any* version of the Scheme
standard.  However, most Scheme implementations will accept 1+x as a
valid identifier.

There are actually many implementations for which this

is an error.  Notably R6RS requires it to be an error.

Schemes typically use the name `add1' for this.

-- 

Alex

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