Aspect oriented programming: Difference between revisions

Python has special syntax for [http://legacy.python.org/dev/peps/pep-0318/ decorators] acting on functions and methods, as well as [http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python metaclasses].

=={{header|Tcl}}==

Tcl's <code>trace</code> command enables much AOP-like functionality, with variable traces allowing interception of accesses to variables, and command traces allowing interception of executions of procedures, etc. In addition, TclOO (Tcl's <!--main--> object system) also supports filter methods, which wrap around invocations of methods of an object (or all methods of a class) as a generalisation of before, after and around advice. This works well when combined with a mixin, allowing interception to be applied on a per-instance basis if desired.

puts ">>[xmpl calculate 2 3 5]<<"</lang>

{{out}}