Re: Modules, interfaces

[Dirk Laurie <dirk.laurie@...>]

>>> local module_list = {
>>>   require ("m"),
>>>   require ("n"),
>>>   require ("q"),
>>> }
>>> print (#module_list) -- The printed value will be "4"
>>
>> Nope. Only the first return value would be kept in a table constructor.
>
> ... except for the last value: if require 'q' returns multiple values,
> they'll all be put into the table.
>
> The real problem with returning multiple values from a module is that
> "require" only returns one value, regardless of what the module does...
>
The last sentence made me wonder whether the "if" clause in the previous
sentence could ever be true.  And of course it can, "require" is merely
a predefined name.  Nothing stops you from writing this:

    function require(x) return x,x+1,x+2 end
    s={require(100)}
    print(#s) --> 3

(However, if you do that sort of thing, please don't ask me to help you
debug your code, ever.)