On 05/12/2014 10:54 AM, Walter Bright wrote:
On 5/11/2014 10:57 PM, Marco Leise wrote:
Am Sun, 11 May 2014 17:50:25 -0700
schrieb Walter Bright <newshou...@digitalmars.com>:
As long as those pointers don't escape. Am I right in that one cannot
store a
borrowed pointer into a global data structure?
Right, and that's the point and entirely positive-to-do™.
This means that a global data structure in Rust has to decide what
memory allocation scheme its contents must use,
Global variables are banned in Rust code outside of unsafe blocks.
and cannot (without tagging) mix memory allocation schemes.
...
Tagging won't help with all memory allocation schemes.
For example, let's say a compiler has internally a single hash table of
strings. With a GC, those strings can be statically allocated, or on the
GC heap, or anything with a lifetime longer than the table's.
But I don't see how this could work in Rust.
It's possible if you don't make the table global.
(OTOH in D this is not going to work at all.)
