Re: [Chicken-users] how to unintern a symbol

[Dan Leslie]

Is that a function composition function I spy?
I wasn't aware of such a thing in R5RS or R7RS, is it a chicken
extension or a part of one of the Unity libraries?

Thanks!
-Dan

Peter Bex <address@hidden> writes:

> On Mon, Feb 02, 2015 at 10:51:26AM -0700, Alexej Magura wrote:
>> Does Chicken have anything comparable to Common Lisp's /unintern/? I
>> thought that it might be under /##sys/, since other features present
>> in Common Lisp, but absent in Chicken are available under that
>> namespace, but it doesn't seem to be provided by that
>> module/namespace.
>
> There's string->uninterned-symbol, which is even documented, right
> below "gensym":
> http://wiki.call-cc.org/man/4/Unit%20library#string-uninterned-symbol
>
> If you have a symbol you want to unintern, you can get its string
> and create an uninterned symbol from that:
>
> (define unintern (o string->uninterned-symbol symbol->string))
>
> (eq? (unintern 'foo) 'foo) => #f
>
> Cheers,
> Peter
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-- 
-Dan Leslie