Re: [MIT-Scheme-devel] string-head!

[Joe Marshall]

On Thu, Sep 24, 2009 at 12:59 PM, Taylor R Campbell <address@hidden> wrote:
>  In any case, I thought the point of
> STRING-HEAD! was to reduce pressure on the garbage collector, not to
> reduce the time spent switching between Scheme land and C land, and we
> can reduce pressure on the garbage collector just by using the
> primitive SET-STRING-MAXIMUM-LENGTH! if it's available.

Has anyone measured the performance difference between smashing
the string head and just taking a substring?  I'd bet it's a pretty minimal
improvement against the background of the other things that happen during I/O.

-- 
~jrm