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- Subject: Re: Holes
- From: Mark Hamburg <mark@...>
- Date: Tue, 14 Dec 2010 07:18:08 -0800
On Dec 14, 2010, at 12:37 AM, Tony Finch wrote:
> On 14 Dec 2010, at 08:34, Dirk Laurie <dpl@sun.ac.za> wrote:
>> On Tue, Dec 14, 2010 at 07:40:05AM +0200, Mark Hamburg wrote:
>>>
>>> Here is another potential solution to the "holes" problem:
>>>
>>> 1. Define a new value type HOLE or NIL or NULL or whatever.
>>
>> Sorry, I stop reading the post right here. A language that
>> has only 8 value types can't afford to add a type simply to
>> address a minor inconvenience.
>
> My reaction is to ask why Mark would want to reinvent JavaScript.
I thought about citing JavaScript as an antecedent but decided it wouldn't lend any useful weight here. ;-)
Another way to think about this is that LUA_THOLE joins LUA_TDEADKEY as part of the table implementation though in this case it serves to support "nil-preserving tables".
Mark
