On 8 April 2012 12:46, Vladimir Panteleev <vladi...@thecybershadow.net>wrote:
> On Sunday, 8 April 2012 at 05:56:36 UTC, Andrei Alexandrescu wrote: > >> Walter and I discussed today about using the small string optimization in >> string and other arrays of immutable small objects. >> >> On 64 bit machines, string occupies 16 bytes. We could use the first byte >> as discriminator, which means that all strings under 16 chars need no >> memory allocation at all. >> > > Don't use the first byte. Use the last byte. > > The last byte is the highest-order byte of the length. Limiting arrays to > 18.37 exabytes, as opposed to 18.45 exabytes, is a much nicer limitation > than making assumptions about the memory layout. > What is the plan for 32bit?
