Since XAMPP 5.5.30 and 5.6.14, XAMPP ships MariaDB instead of MySQL. MariaDB is not 100% compatible with MySQL and can be replaced with the "orginal" MySQL server.
c:\xampp\mysql to c:\xampp\mariadb
| Below are the Big O performance of common functions of different Java Collections. | |
| List | Add | Remove | Get | Contains | Next | Data Structure | |
| ---------------------|------|--------|------|----------|------|--------------- | |
| ArrayList | O(1) | O(n) | O(1) | O(n) | O(1) | Array | |
| LinkedList | O(1) | O(1) | O(n) | O(n) | O(1) | Linked List | |
| CopyOnWriteArrayList | O(n) | O(n) | O(1) | O(n) | O(1) | Array |
| <?PHP | |
| // Generates a strong password of N length containing at least one lower case letter, | |
| // one uppercase letter, one digit, and one special character. The remaining characters | |
| // in the password are chosen at random from those four sets. | |
| // | |
| // The available characters in each set are user friendly - there are no ambiguous | |
| // characters such as i, l, 1, o, 0, etc. This, coupled with the $add_dashes option, | |
| // makes it much easier for users to manually type or speak their passwords. | |
| // | |
| // Note: the $add_dashes option will increase the length of the password by |