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- Subject: Re: Numerical constants
- From: Julien Hamaide <julien.hamaide@...>
- Date: Thu, 24 May 2007 13:36:31 +0200
Philippe Lhoste wrote:
> On 24/05/2007 10:51, Thomas Lauer wrote:
>> I would like to know what others have done when faced with long lists of
>> constants. (A quick search in the archives has brought no revelation.)
>> Things I consider are first and foremost ease of use (for the clients of
>> the library, not for me;-) and efficiency, space- and time-wise.
> I never looked closely at its implementation, but I recall that in Lua
> integration to SciTE, author avoided to put all the constants in the Lua
> variable space, bloating the memory use.
> Instead, all constants from the Scintilla component are defined as
> global variables, and using the __index metamethod on _G, he retrieves
> the constant on demand.
> I hope this makes sense...
In our game dev environment, we decide to do some kind of preprocessing
to limit both expensive call to C and memory use of variable.
We use a custom C parser, but this can be implemented with token-filter.
The advantage is constant are always sync with C constant value.
Hope it help.
10Tacle Studios Belgium / Elsewhere Entertainment