Re: A Question of Style

[jiang yu <yu.jiang.163@...>]

That's right, but, not simple.

2011/11/30 HyperHacker <hyperhacker@gmail.com>:
> On Tue, Nov 29, 2011 at 10:18, jiang yu <yu.jiang.163@gmail.com> wrote:
>> I prefer 2)
>> 1. It is simpler than 1)
>> 2. If there is bug in 2), you can correct it and just dofile() —— no
>> need restart the program.
>>
>> 2011/11/26 Marc Balmer <marc@msys.ch>:
>>> Hi
>>>
>>> I have a stylistic question wrt/ calling Lua "callbacks" from a C
>>> program.  I see two obvious approaches:
>>>
>>> 1) Lua code registers callbacks explicitely using a RegisterCallback
>>> function that is provided by the C program; the C program later calls
>>> the callback function when one is registered.
>>>
>>> 2) Lua code does not register callbacks, but the callbacks must be
>>> functions with a certain name, e.g. "MouseMovedCallback"; C code will
>>> then see if a function with the correct name is available in the Lua
>>> state, and if so, call it.
>>>
>>> Are there advantages of one approach over the other?  Are there other
>>> approaches?  If you also use callback written in Lua, which you call
>>> from C, I'd like you to share your opinion (and/or experience).
>>>
>>> I experienced with both forms, I am unsure for which form to go...
>>>
>>> Thanks,
>>> Marc
>>>
>>
>
> You can do that with method 1 too, by just having the script
> unregister and reregister its handlers at startup.
>
> --
> Sent from my toaster.
>