Re: NSString floatValue issue

FROM : j o a r
DATE : Tue Feb 26 23:10:57 2008

On Feb 26, 2008, at 9:47 PM, C Sandeep wrote:

> Thanks for the ideas. Im using the class method to evaluate such
> strings, thusly:
>
> -(NSNumber *) getNumberFrom: (NSString *) str {
>
>    NSScanner *scanner = [NSScanner scannerWithString: str];
>    int numerator, denominator;
>    [scanner scanInt: &numerator];
>    [scanner scanString:@"/" intoString: NULL];
>    [scanner scanInt: &denominator];
>    float result = (float) numerator/denominator;
>    NSNumber *nm = [NSNumber numberWithFloat: result];
>
>    return nm;
> }



Unless you have very good control over the input to your function, you 
should probably add better error checking:

   if ([scanner scanInt: &numerator])
   {
       // Continue parsing
   }

j o a r