Re: Sieve of Eratosthenes performance question

[Doug Rogers <rogers@...>]

Paul Hudson wrote:

> I know I’m flogging a dead horse here, and I do not expect it ever to
> change (or want it to, as it would be too disruptive), but things like
> this make me more certain in my view that combining dictionaries/hash
> tables and contiguously-indexed-arrays in Lua was a mistake.

But the interface hasn't changed. Lua the language hasn't changed. You
can still use non contiguously indexed arrays. You can still use
whatever you want (except nil) to index a table. I don't get the gripe.
We're only talking about the implementation here. I know, I know, the
implementation matters as far as performance goes. But in this case it
helps.

The only change in the language that is relevant to this discussion is
the definition of the '#' operator. It managed to escape from the
implementation through the protective membrane of the interface.

Doug

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