Design: Idiom for classes and methods that are customizable by the user?

Hi there, I'm one of the SCons (http://www.scons.org) developers and am working on a partial redesign of our architecture. I'd like to come up with a decent proposal about how to extend and rewrite our code base, such that it's easier for a user to overload and replace some parts of the functio

Re: Design: Idiom for classes and methods that are customizable by the user?

Hi Marko, thank you very much for your quick reply. On 13.05.2016 00:01, Marko Rauhamaa wrote: [...] - Is this a good approach As an approach, that looks ok. The code looks a bit too lenient, though, which can easily surprise and baffle the user. I think it would be better to fail: ===

Re: Design: Idiom for classes and methods that are customizable by the user?

Hi Marko, Am 13.05.2016 um 07:53 schrieb Marko Rauhamaa: Dirk Bächle : For example, why do you need a key? Couldn't you simply pass the task master class as an argument? The idea behind this is, to be able to select classes by giving a parameter on the command-line. So at some po

Re: Design: Idiom for classes and methods that are customizable by the user?

Hi Gregory, thanks a lot for your answer and comments. Am 13.05.2016 um 08:35 schrieb Gregory Ewing: Dirk Bächle wrote: [...] I'd even suggest that *all* of the build logic should be in the Nodes, and the Taskmaster class shouldn't exist at all. The top level logic should just tell

Re: Design: Idiom for classes and methods that are customizable by the user?

Hello Dieter, Am 13.05.2016 um 09:21 schrieb dieter: Dirk Bächle writes: ... My questions - Is this a good approach, that I could use for other parts of the architecture as well, e.g. the Node class mentioned above? You might look at the "adpater" pattern. It is he

Re: Autotool - compile module for both Python 2 _and_ 3

Hi Ervin, On 16.05.2016 11:05, Ervin Hegedüs wrote: Hi All, there is a library, which written in C. I'ld like to use it from Python - from Python 2 _and_ 3. I can make the autotools* files for Python 2 and Python 3, but only exclusively. I can't make it for both in same time. [...] Is there

Re: Design: Idiom for classes and methods that are customizable by the user?

Hi Michael, and thanks a lot for chiming in on this topic. On 13.05.2016 22:33, Michael Selik wrote: [...] I share Greg's trepidation when I hear a phrase like that, but the general idea of a registry of classes or functions and then picking the right one based on string input is fine. S

Re: How do I subclass the @property setter method?

Hi Christopher, On 20.05.2016 20:50, Christopher Reimer wrote: Greetings, My chess engine has a Piece class with the following methods that use the @property decorator to read and write the position value. slightly off topic: is your chess engine available in a public repo somewhere? I think