Re: How to properly initialize a module?

[Rob Hoelz <rob@...>]

That's kind of a neat idiom; you could easily then do something like
this:

local canvas = require 'canvas' '/dev/fb0'

or even this:

local canvas = require 'canvas' {
  device = '/dev/fb0'
}

You could even set __call on canvas, so "require 'canvas'" will return
the right object.

Neat idea. =)

On Tue, 6 Dec 2011 12:26:42 -0600
Tim Caswell <tim@creationix.com> wrote:

> I think stock lua's require allows this and I know I do in Luvit, but
> often I'll make the module itself be a function instead of a table.
> Then it would be
> 
> local Canvas = require('canvas')
> local canvas = Canvas('/dev/fb0')
> 
> On Tue, Dec 6, 2011 at 12:11 PM, Luiz Henrique de Figueiredo
> <lhf@tecgraf.puc-rio.br> wrote:
> >> So I implemented something like this:
> >>
> >>   require 'canvas'
> >>   canvas.init('/dev/fb0')
> >>   -- canvas usage
> >
> > To make it prettier, export a function
> >
> >        function canvas.with(options)
> >                canvas.init(options)
> >                return canvas
> >        end
> >
> > and use it as
> >
> >        local canvas = require'canvas'.with'/dev/fb0'
> >        -- canvas usage
> >
>

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