3 ms·

or 3 - stop trusting the internal String implementation to be as efficient as possible, write a wrapper you can update with the best method for the current vers

• x0x0 11y ago
  why not reimplement the entire standard library so you understand and control all the performance characteristics? This can be just like writing C in the 90s: start by writing a hashmap, a string, an arraylist or equivalent, etc. Because your code is sensitive to every common data structure you use.
  • jaawn 11y ago
    Because, most of the time, performance doesn't matter enough to justify it. Custom solutions are only necessary if you know performance is critical to your application's purpose, and that you need to squeeze as much out as possible. If that isn't the case, then you don't need to worry about the implementation details, because, in general, any performance changes won't matter.