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82
votes
8answers
5k views

What is the most effective way to add functionality to unfamiliar, structurally unsound code? [duplicate]

This is probably something everyone has to face during the development sooner or later. You have an existing code written by someone else, and you have to extend it to work under new requirements. ...
18
votes
19answers
3k views

Programming languages with a Lisp-like syntax extension mechanism [closed]

I have only a limited knowledge of Lisp (trying to learn a bit in my free time) but as far as I understand Lisp macros allow to introduce new language constructs and syntax by describing them in Lisp ...
15
votes
3answers
641 views

How would one go about building pluggable software?

If you have an application of some sort and you want your users to be able to write plugins for it, how should the application be designed? What do you have to take into account, what design ...
3
votes
3answers
834 views

Difference between extensible programming and extendible programming?

What exactly is the different between "extensible programming" and "extendible programming?" Wikipedia states the following: The Lisp language community remained separate from the extensible ...