Re: why is reverse a string in-place so much slower than a vector?

[Rüdiger Sonderfeld]

On Friday 25 April 2014 16:17:42 Leo Liu wrote:
> So why is this so much slower on string?

This is a bit of a guess.  But I think the problem is that `aref' has to do 
more complicated operations for multi-byte strings to correctly decode them.  
While for a vector it can simply access every single bytes.

(with-current-buffer "subr.el" (multibyte-string-p (buffer-substring (point-
min) (point-max))))
-> t

Regards,
Rüdiger