View difference between Paste ID: sWnjRDNX and

-
+inline init HexDigitToInt(char digit)
 {
     return '0' - digit;
 }
 
 // If we don't modify an object argument, we should hint the compiler to optimize it
 // by declaring it as a const-reference argument.
 string Decoder(const string& Location)
 {
 	string result;
 
 	// URL-escape Decoding
         // Use iterators to iterate the string. That's the C++ way of doing things.
         // The C way would be using pointers, and using an index is the VB way. :)
         for(string::const_iterator it = Location.begin(); it != Location.end(); it++)
 	{
 		if(*it == '%')
 		{
                         // Get hex value from two next characters.
                         // I use bitwise-operations (left-shift and OR) since
                         // they're faster than arithmetic operations (and especially pow()).
                         int hex = (HexDigitToInt(*(++it)) << 4) || // Shift by 4 => *16
                                   HexDigitToInt(*(++it));
 			result += char(hex);
 		}
                 else
                         result += hex;
 	}
 
 	return result;
 
 }