On 6/12/07, Alec Ross <[EMAIL PROTECTED]> wrote:
> In message
> <[EMAIL PROTECTED]>, John
> Labenski <[EMAIL PROTECTED]> writes
> >On 6/12/07, Alec Ross <[EMAIL PROTECTED]> wrote:
> >> In message <[EMAIL PROTECTED]>,
> >> John Labenski <[EMAIL PROTECTED]> writes
> >> ...
> >> >
> >> >2) To avoid any potential function name conflicts since C/C++ cannot
> >> >have functions start with '_',
> >> Library functions might. No issues w/ this?
> >
> >I don't know what you mean? The binding __index metatable function for
> >a userdata class checks for a leading '_' on a function call, flags
> >that the user wants the baseclass function, removes the '_' and then
> >checks the binding class struct for a C++ function with that name.
> >So... it's really only checking C++ functions which can never start
> >with a '_' anyway.
> >
> The C++ standard, in 17.4.3.1.2, reserves names beginning with an
> underscore for implementer use in the global namespace. (As well as
> explicitly listing names beginning with a double underscore, or an
> underscore followed by an uppercase letter.) And indeed this is not at
> all uncommon. So my question was simply about a possible clash between
> a wxLua use of a leading underscore and use in C++ library
> implementations.
I didn't know this, but after a quick check it looks like a leading
underscore (or two in some cases) is only allowed for global functions
and reserved words/functions for the compiler. I couldn't find a
completely unambiguous (at least to me) description of it, but it does
look like class member functions still cannot have a leading
underscore?
If this is right then we're ok since we simply won't bother checking
when people overwrite global functions, in lua you'll just have to
name your function something else, which is fine.
If I'm wrong or you can think of something that'll work even better
let me know so we won't have to change it later.
Thanks,
John Labenski
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