Question

I’ve been building a currency removal function which will work across the globe.
However a bug has come to light and unsure why.

+(double)removeFormatPrice:(NSString *)strPrice {

    NSNumberFormatter *currencyFormatter = [[[NSNumberFormatter alloc] init] 
        autorelease];
    [currencyFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];
    NSNumber* number = [currencyFormatter numberFromString:strPrice];

    NSNumberFormatter *formatter = [[[NSNumberFormatter alloc] init] 
        autorelease];
    NSMutableString *mstring = [NSMutableString stringWithString:strPrice];
    NSRange wholeShebang = NSMakeRange(0, [mstring length]);

    [mstring replaceOccurrencesOfString: [formatter decimalSeparator]
                             withString: @"."
                                options: 0
                                  range: wholeShebang];

    double newPrice = [mstring doubleValue];
    if (number == nil) {

        return newPrice;
    } else {
        return [number doubleValue];
    }
}

If I pass in 1,000.00 then it replaces the dot (period / full stop) it should just do that, but it also replaces the comma. Newprice comes out as 1. Heres my full debug…

Answer 1

Use this

[mstring replaceOccurrencesOfString: [formatter groupingSeparator]
                             withString: @""
                                options: 0
                                  range: wholeShebang];