If you want to master functional programming, the best place to start is with the Java Function interface.This example will show you four different ways to implement this functional interface in your ...

Procedures can be used throughout a program, making them simpler and quicker to code. Using procedures has an added benefit. If something needs to be changed in a procedure, it only needs to be ...

The observations are grouped in another way, for example, chronological order. The requirement for ordering or indexing observations according to the values of BY variables is suspended for BY-group ...