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On Tue, Jan 04, 2011 at 03:18:29PM +0200, Leo Razoumov wrote:
> Lua provides no good way to test whether a given array has holes or
> not. 
Not Lua's job.  Your job.

You, as programmer, make a conscious decision as to whether your 
arrays are allowed to contain holes.  If so, you don't rely on 
the default #, table.insert, table.remove.

Trying very hard, this early 2011, to be a nice person,