Question

NSMutableArray *m_res = [NSMutableArray arrayWithCapacity:ticks];
double t = lo_t;
while (t <= hi_t) {
    [m_res addObject:[NSDecimalNumber decimalNumberWithDecimal:
                      [[NSNumber numberWithDouble:t] decimalValue]
                      ]];
    t += delta_t;
}

return [[NSArray arrayWithArray:m_res] retain];

It is supposed to return a persistent NSArray containing some values. I plan to call release on it when it is no longer needed. Is it ok or there’s some bug, because when I call function containing this code my program stops working (and it’s a memory issue not endless loop).

Answer 1

The code is safe (ie won’t crash) but the last line is incorrect.
The arrayWithArray is doing nothing useful and the retain is a leak.

It should be

return m_res;

If you hava a crash the cause is elsewhere.