On 2016-11-05 12:42, Dmitry Gutov wrote:
> On 05.11.2016 17:52, Clément Pit--Claudel wrote:
> 
>> I never understood this one.  The name string-to-int suggests that you'll get an error if your string doesn't describe an int.
> 
> I'm just guessing, but that probably never happened. stirng-to-number works like this:
> 
> ELISP> (string-to-number "abc")
> 0 (#o0, #x0, ?\C-@)
> ELISP> (string-to-number "22.2abc")
> 22.2

I know, I know :) (what is this fancy ELISP repl, btw?)

>> How do you get a proper string-to-int behavior in Emacs Lisp? With (let ((v (string-to-number s))) (when (floatp v) (error …)))?
> 
> By calling `floor' on the result of string-to-number, I guess.

Hmm. I'd expect string-to-int to error on non-ints:

>>> int("1.3")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for int() with base 10: '1.3'

Clément.