imported module (srfi srfi-60) overrides core binding

imported module (srfi srfi-60) overrides core binding

[Bruce Korb]

Hi,

I am getting this error message:

WARNING: (guile-user): imported module (srfi srfi-60) overrides core
binding `bit-count'

What is this trying to say?  I just need the arithmetic-shift
function.  Thank you.

Re: imported module (srfi srfi-60) overrides core binding

[Andy Wingo]

Hi Bruce,

On Thu 24 Jun 2010 23:02, Bruce Korb <bruce.korb@gmail.com> writes:

> I am getting this error message:
>
> WARNING: (guile-user): imported module (srfi srfi-60) overrides core
> binding `bit-count'
>
> What is this trying to say?  I just need the arithmetic-shift
> function.  Thank you.

It's saying that srfi-60 exports bit-count, but Guile already defined
bit-count. It then replaces the core definition (in your current module)
and proceeds.

It's just a warning, albeit a confused one:
http://article.gmane.org/gmane.lisp.guile.devel/10525. Fixed in git.

However `ash' is available in the default environment (see the manual),
and I think it optimizes better. Alternately you could:

  (use-modules ((srfi srfi-60) #:select (arithmetic-shift)))

or

  #:use-module ((srfi srfi-60) #:select (arithmetic-shift))

in a define-module form.

And
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