May 26, 2018
Richer semantics for attribute handlers
This module, when inherited by a package, allows that package’s class to define attribute handler subroutines for specific attributes. Variables and subroutines subsequently defined in that package, or in packages derived from that package may be given attributes with the same names as the attribute handler subroutines, which will then be called in one of the compilation phases i.e. in a BEGIN, CHECK, INIT, run-time, or END block.