[Bf-committers] Decorator Pattern

[Toni Alatalo]

Python decorators do not implement the Decorator Pattern, they are
different things. Wikipedia explains it like this:

""" https://en.wikipedia.org/wiki/Decorator_pattern#Python
Please do not confuse the Decorator Pattern (or an implementation of
this design pattern in Python - as the above example) with Python
Decorators, a Python language feature. They are different things.

Second to the Python Wiki:

The Decorator Pattern is a pattern described in the Design Patterns
Book. It is a way of apparently modifying an object's behavior, by
enclosing it inside a decorating object with a similar interface. This
is not to be confused with Python Decorators, which is a language
feature for dynamically modifying a function or class.[7]"""

I'm not surprised if that pattern, nor other from the OO patterns
movement, is not used in Blender at all. Curious to hear if it is,
though :)

-Toni

On Mon, Mar 12, 2018 at 7:25 AM, Campbell Barton <ideasman42 at gmail.com> wrote:
> Hi, Blender's built in scripts don't make much use of decorators
> they are used here though:
> https://docs.blender.org/api/2.79/bpy.app.handlers.html#persistent-handler-example
>
> On Mon, Mar 12, 2018 at 11:33 AM, Brad Eric hollister
> <behollis at soe.ucsc.edu> wrote:
>> Hi,
>>
>> I’m preparing a short talk on the decorator pattern for classroom instruction.
>>
>> I’d like to use an example from Blender. Are there any such examples in the codebase?
>>
>> Regards,
>> Brad
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>
>
>
> --
> - Campbell
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