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Andrei Alexandrescu
SeeWebsiteForEmail at erdani.org
Sat Oct 11 07:54:43 PDT 2008
Christopher Wright wrote:
> Andrei Alexandrescu wrote:
>> Steven Schveighoffer wrote:
>>> "Andrei Alexandrescu" wrote
>>>>> typeof(d) == char[15]*
>>>> just char[15].
>>>
>>> What is the point of that? Why wouldn't you just say:
>>>
>>> char[15] d;
>>
>> Only uniformity. In general Type() creates an instance of Type. Easy!
>>
>>>> S * pS = allocate!(S)(... optional args ...);
>>>
>>> Ugh. How many extra 'wrapper' functions are built into the code
>>> because of this? I suppose it probably would be inlined.
>>
>> Performance is not to worry about. allocate does only a call to
>> gc.allocate, the requisite initialization, and a cast. The cost of
>> call to gc.allocate dwarfs the call overhead even in absence of inlining.
>
> Compile times are something to worry about. I'm quite hesitant to use
> templates when there is a reasonable alternative; they tend to increase
> compilation times dramatically, even if they're relatively simple.
I think this is a self-sustaining myth. I use many templates but rarely
notice a compilation time issue.
Andrei
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