From: Kenneth McDonald <kenneth.m.mcdonald@...>
Date: 2007-08-27T05:26:46+09:00
Subject: Re: Strict conversion of strings to ints?

The real problem is:

irb(main):002:0> "12,345".to_i
=> 12

Basically, Ruby converts anything that starts with an int, which is 
really quite nasty in a case such as the above. I spent a lot of time 
tracking down that problem.

So, I want an integer conversion function that throws an error if the 
_entire_ string can't be interpreted as an integer; the Ruby analog to 
the standard string-to-int conversion function in most other languages.


Thanks,
Ken

James Edward Gray II wrote:
> On Aug 25, 2007, at 10:19 PM, Kenneth McDonald wrote:
>
>> Is there an easy way to parse a string to an integer that will throw 
>> an error of some sort if the string is not actually a properly 
>> formatted integer? "to_i" of course is very non-strict, which is no 
>> good for what I want, and I'd prefer not to write my own when it 
>> seems likely that there would be some way to do this already...
>
> >> Integer("junk")
> ArgumentError: invalid value for Integer: "junk"
>         from (irb):1:in `Integer'
>         from (irb):1
>
> Hope that helps.
>
> James Edward Gray II
>
>