...lIdentifier]; if(cell == nil ) { cell =[[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease]; } if ([indexPath compare:self.lastIndexPath] == NSOrderedSame) { cell.accessoryType = UITableViewCellAccesso...

...contrast, is linear, only builds up a single string (= drastically reduced allocation costs compared to Joel’s code) and furthermore the engine can optimize the hell out of it (to be honest, I doubt the .NET regex is smart enough for this but in theory this regular expression can be implemented s...

...ollowing: [self.loginButton setAttributedTitle:[[NSAttributedString alloc] initWithString:@"Error !!!" attributes:nil] forState:UIControlStateDisabled]; [self.loginButton setEnabled:NO]; share | ...

...n fit into a single int (i.e. 32 bits in the example above), the compiler allocates only a single int's worth of memory (test_1, short type for test_2, char type for test3). Ignored in the above example, if a single int can't hold the bitfields anymore, we add a second one. ref to this example for...

...e given set and then putting these objects into a new array. So the newly allocated memory should be negligible. share | improve this answer | follow

...tor's swap, the vector's swap won't throw if the two vectors have the same allocator (i.e., the normal case), but will make copies if they have different allocators. And thus, I assume it could throw in this last case. So, the original text still holds: Don't ever write a throwing swap, but nobar's ...

...ch is less efficient because the StringBuilder is backed by a char[] (over-allocated by StringBuilder() to 16), only for that array to be defensively copied by the resulting String. String.valueOf(char) "gets in the back door" by wrapping the char in a single-element array and passing it to the pac...

... On the contrary 'split' is actually overkill. So many string/array allocations. – Sayam Qazi Jun 14 '18 at 5:51 ...

...s can be improved a bit. The length of the string is known, so you can pre-allocate the StringBuilder's length. Since you are going to call StringBuilder.append anyway, don't bother creating a new char[] and String in each loop iteration: just append the capitalized letter, then the rest of the word...

...critical it is that you don't deprive the OS of resources it might want to allocate to other programs. The Closeable interface can be used if a wrapper constructor is likely to fail in Java 5 or 6: Reader reader = new FileReader(fileName); Closeable resource = reader; try { BufferedReader buffer...