On 10/13/2010 06:23 PM, Denis Koroskin wrote:
On Thu, 14 Oct 2010 03:06:30 +0400, Andrei Alexandrescu
<seewebsiteforem...@erdani.org> wrote:
Gnu offers two specialized routines:
http://www.gnu.org/s/libc/manual/html_node/Line-Input.html. It is many
times more efficient than anything that can be done in client code
using the stdio API. I'm thinking along those lines.
I can easily implement similar interface on top of chunked read:
ubyte[] readLine(ubyte[] lineBuffer); or bool readLine(ref ubyte[]
lineBuffer);
You can't.
I've quickly looked through an implementation, too, and it's still
filling a buffer first, and then copying character byte-by-byte to the
output string (making realloc when needed) until a delimiter is found.
It is exactly as efficient as implemented externally.
Except you don't have an interface to copy byte by byte. Oops...
It does the same
amount of copying and memory allocations. "Many times more efficient" is
just an overestimation.
It's not. I measured because it was important in an application I was
working on. It's shocking how some seemingly minor changes can make a
big difference in throughput.
BTW, did you see my message about std.concurrency?
Yes, but I'll need to leave the bulk of it to Sean. Thanks.
Andrei
