Re: [Chicken-users] symbol->string

[felix winkelmann]

On 10/23/06, address@hidden
<address@hidden> wrote:
> Hello Thomas.
>
> > If you want alphabetic ordering, you should avoid symbol->string, because
> > it copies the name of the symbol to a new string -- this is necessary as
> > Scheme's strings are mutable objects!
>
> With some exceptions, like ... symbol->string :-)
> "It is an error to apply mutation procedures like string-set! to
> strings returned by this procedure."
> from
> <www.schemers.org/Documents/Standards/R5RS/HTML/r5rs-Z-H-9.html#%_sec_6.3.3>

That it is an error does not prevent someone from creating havoc by
mutating interned symbol names. Therefore it is safer and standard
compliant to copy the string.


cheers,
felix


--
http://galinha.ucpel.tche.br:8081/blog/blog.ssp