Cyclic Dependencies
Zarathustra
adam.chrapkowski at gmail.com
Mon Dec 8 23:37:30 PST 2008
Ellery Newcomer Wrote:
> Hello all,
>
> I began learning D a few months ago, and now I have a question about
> cyclic dependencies (and some random whining).
>
> I come from a java background and have had no serious exposure to C++.
> In java, cyclic dependencies are legit to the best of my knowledge. I
> don't know about C++, thus I don't know about D.
>
> When I first started learning D I decided that a good way to learn it
> would be by porting a popular java api (mind, I didn't say intelligent),
> which came complete with a few cyclic dependencies. At the moment, I'm
> using GDC, and it refuses to swallow cyclic dependencies. The compiler
> doesn't complain, but it throws a runtime exception. I can break the
> dependency loops and GDC will work just fine, but what I'm wondering is
> whether it is standard that the dependency hierarchy be acyclic, or is
> this some quirk of GDC, or is it more likely that there is something
> weird going on in my java-to-D translation.
>
> Also, I would be trying to compile with DMD, but I have evidently
> managed to crash the compiler, and I don't know if it's DMD's fault or
> mine. It reports an Internal Error in e2ir.c at line 3904. (not being a
> C++ guru, the line "assert(n2->Enumbytes);" doesn't mean much to me)
> That was with DMD 1.037, Tango 0.997, and using dsss to build.
>
> On an unrelated note, is this code supposed to be incorrect?
>
> wchar[] w = (true)? "true":"false";
>
> --> Error: cannot implicitly convert expression ("true") of type char[]
> to wchar[]
>
> or should it be reported as a bug?
just use:
wchar[] w = (true)? "true"w:"false"w;
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