From: "Christoffer Lernö" <lerno@...>
Date: 2008-07-01T02:43:07+09:00
Subject: Re: Something like import/package in java?

On 30 Jun 2008, at 19:19, Michael Morin wrote:

> Christoffer Lernö wrote:
>> What I'd love to have is something like this instead of require:
>> <logio.rb>
>> package commands
>> class LogIn
>> ...
>> end
>> class LogOut
>> ...
>> end
>> end
>> <main.rb>
>> import commands.LogIn
>> where import goes into the commands dir and just loads that single  
>> class.
>> Is there something like this available? Any ideas?
>> /C
>
> Not really.  If you're worried about namespace pollution, you can  
> put everything into a module.  Besides including the module and  
> "importing" everything within it, I don't think there's a way to  
> selectively include classes or methods from the module.
>
> What exactly are your concerns?  Neatness aside.

Readability, clear division of responsibilities, ease of development.

- Even with unit test suites I don't feel secure that the test isn't  
conditional on files included by other tests.
- If I want to include all classes from a dir, I have to manually scan  
through the dir.
- Clear cut organization of files.
- Crystal clear dependencies between files.
- Lots of other small worries I can't quite put my finger on.

There's some breaking point around 20+ files for me (excluding unit  
tests), when it becomes really important to have a well-defined  
organization of my classes, and here just heaping classes into  
different files doesn't quite cut it for me.


/C