Anything in the review queue?
bearophile
bearophileHUGS at lycos.com
Wed Mar 23 06:18:27 PDT 2011
Don:
> However, the other case which is interesting is when BigInt is replaced
> with FixedInt!n (maybe someone can come up with a better name for this?)
> -- an integer with a length of a fixed number of ints.
> Unlike BigInt, this has basically the same semantics as built-in integer
> types. In fact, FixedInt!1 == int, FixedInt!2 == long, FixedInt!4 == cent.
> This is possibly even more relevant for Rational. I haven't thought much
> about the implications though.
>
> > BTW, does BigInt over-allocate initially to allow certain operations
> > (like +=) to be done in-place more frequently?
>
> No, it doesn't. As long as it uses copy-on-write, there's no benefit to
> doing so.
> Reference counting would clearly be superior for FixedInt, but I'm not
> at all sure that it would be a win for BigInt. But of course FixedInt
> wouldn't need to over-allocate.
Are FixedInt fully allocated on the stack?
Bye,
bearophile
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