07-Dec-2013 03:55, H. S. Teoh пишет:
On Fri, Dec 06, 2013 at 03:19:24PM -0800, Walter Bright wrote:
On 12/6/2013 3:02 PM, Maxim Fomin wrote:
- phobos snowball - one invocation of some function in standard
library leads to dozens template instantiations and invocations of
pretty much stuff
> One low-hanging fruit that comes to mind is to use local imports instead
> of module-wide imports. If the local imports are inside templated
> functions, I *think* it would prevent pulling in the imports until the
> function is actually used, which would have the desired effect. (Right?)
> Much of Phobos was written before we had this feature, but since we have
> it now, might as well make good use of it.
A major point is to decouple feather-weight "traits" part of modules and
the API part of module (preferably also split by category).
Then a given Phobos module may do something like this:
import std.regex.traits;
auto dirEntries(C, RegEx)(in C[] path, RegEx re)
if(isSomeChar!C && isRegexFor!(Regex, C))
{
import std.regex; //full package
...
}
--
Dmitry Olshansky
