Re: A little bit about nothing (was Re: Empty? No. Array? No. Has? Yes.)

[Finn Wilcox <finnw@...>]

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On 03/07/2013 17:20, Sean Conner wrote:
> 
> In straight Lua, there is no way for something to know if it was 
> called like:
> 
> something()
> 
> or
> 
> something(nil)
> 

Yes there is:

function something(...)
  local mary = ...
  return mary, select('#', ...) >= 1
end

> =something()
nil	false
> =something(nil)
nil	true
> =something(1)
1	true


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