Converts NSString to std::string

NSString_to_Stl.mm

- (std::string)toStlString
{
    if (nil == self)
    {
        return "";
    }
    
    
    NSUInteger bytesSize = [self lengthOfBytesUsingEncoding: NSUTF8StringEncoding] +  sizeof( char );
    std::vector<char> bytesVt( bytesSize, 0x00 );
    
    
    
    BOOL getBytesResult =
    [ self getCString: &bytesVt.at( 0 )
            maxLength: bytesSize
             encoding: NSUTF8StringEncoding ];
    if ( !getBytesResult )
    {
        NSLog(@"[toStlString] : not enough memory reserved.");
        return "";
    }
    
    
    
    std::string urlCppString
    ( 
       bytesVt.begin(), bytesVt.end()
    );
    
    return urlCppString;
}

-(void)convertNSString:( NSString* )absoluteString
           toStlString:( std::string& )urlCppString_
{
    if ( nil != absoluteString )
    {
        std::string tmpUrlCppString
        (
         [absoluteString cStringUsingEncoding: NSUTF8StringEncoding],
         [absoluteString lengthOfBytesUsingEncoding: NSUTF8StringEncoding]
         );

        urlCppString_ = tmpUrlCppString;
    }
}

This works better