Ah, thanks, good point. Basically, I was mostly wondering
if I had just missed some obvious helper function somewhere,
but it sounds like not.
-glenn
Bradly wrote:
I would rescue only the TypeError. Rescueing all exceptions is asking
for a hard to track down bug down the road.
-Brad
On Fri, Jan 22, 2010 at 11:35 AM, Glenn Little <[email protected]
<mailto:[email protected]>> wrote:
I'm looking for a simple way to check if a string really represents
a number in ruby/rails. I figured there would be a String.is_numeric?
but haven't found anything.
I've seen suggestions for roll-your-own functions the best of which
appears to be something like (verbosely):
def represents_number?(s)
begin
if Float(s)
return true
else
return false
end
rescue
return false
end
end
This relies on the fact that Float() throws an exception if it
gets a string that it can't convert.
The issue I have with this is that it feels a little hinky in
that it's relying on Float throwing an exception. Maybe that's
okay, but it feels just a shade side-effecty.
The other option is to craft a regexp, which would be tough
if I *really* wanted to be thorough.
Am I missing any simpler options?
Thanks...
-glenn
--
SD Ruby mailing list
[email protected] <mailto:[email protected]>
http://groups.google.com/group/sdruby
--
SD Ruby mailing list
[email protected]
http://groups.google.com/group/sdruby
--
SD Ruby mailing list
[email protected]
http://groups.google.com/group/sdruby
