Re: Modules with standalone main program
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- Subject: Re: Modules with standalone main program
- From: Dirk Laurie <dirk.laurie@...>
- Date: 2018年2月24日 14:46:29 +0200
2018年02月24日 13:37 GMT+02:00 albertmcchan <albertmcchan@yahoo.com>:
> On Feb 24, 2018, at 6:30 AM, Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br> wrote:
>
>>> if ... then
>>> print("I was included as a module")
>>> return {}
>>> end
>>> print("I was executed as a program")
>>
>> Try lua mod.lua 1 2 3 .
>>
>
> As long as the command is NOT mod.lua mod 1 2 3,
> I can test for required with select(1, ...) == 'mod', or simply (...) = "mod"
>
> see http://lua-users.org/wiki/FloatSumFast
Actually, the manual documents what 'require' does, in particular:
"Once a loader is found, require calls the loader with two arguments:
modname and an extra value dependent on how it got the loader. (If the
loader came from a file, this extra value is the file name.)"
And dofile does not do that.
Thanks.
-- Dirk