Re: Quick math calc on any buffer

[Marc Tfardy]

Scott Frazer schrieb:
> On Feb 21, 11:42 am, Rodrigo Lazo <rlazo....@gmail.com> wrote:
> > Hi all,
> >
> > Is there a way to compute a math expression on any buffer? I mean, if I
> > have a buffer with the following expression
> >
> > 2 + 3
> >
> > I want to mark the region and compute the result
> >
> > 2 + 3 = 5
> >
> > It doesn't seems too hard to do, I've looked on calculator.el for a
> > "computing" function I can call but I didn't find it.
>
> (defun my-calc-result (beg end)
>   (interactive "r")
>   (insert " = " (calc-eval (buffer-substring beg end))))

Great! Much more elegant than my last attempt:

(defun my-calc-result2 (beg end)
  (interactive "r")
  (insert " = " (number-to-string (apply 'eval (math-read-exprs 
(buffer-substring beg end))))))


regards
marc