大约有 2,253 项符合查询结果（耗时：0.0120秒） [XML]
Passing Data between View Controllers
...can pass any data (well, almost) via its starting Intent. Easy. No need to cast or something. Passing return values back to caller is an essential thing too, no need to delegate. Of course it is possible to use ugly approaches too, no problem there ))
– Mixaz
A...
ServiceStack vs ASP.Net Web API [closed]
...find out more about ServiceStack in the wild with links to Blog Posts, Pod Casts, Presentations, Gists and more.
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C++ performance challenge: integer to std::string conversion
...e method, such as different stringstream implementations or boost::lexical_cast. It does not, however, make sense when asking for new code, a specialized algorithm, to do this. The reason is that int2string will always involve heap allocation from std::string and if we are trying to squeeze the last...
Are Exceptions in C++ really slow
...cattered around memory, and complex operations to run (basically a dynamic_cast test for each handler)
So, mostly cache misses, and thus not trivial compared to pure CPU code.
Note: for more details, read the TR18015 report, chapter 5.4 Exception Handling (pdf)
So, yes, exceptions are slow on th...
Are HLists nothing more than a convoluted way of writing tuples?
... aren't typically that interesting (at least, they aren't unless they type cast internally). shapeless provides a form of polymorphic function value which allows the compiler to select type-specific cases in exactly the way you're doubtful about. For instance,
// size is a function from values of a...
When do we have to use copy constructors?
...structor with a correct signature and commit the sin of turning to a const_cast.
Copy-on-write (COW)
A COW container that has given away direct references to its internal data MUST be deep-copied at the time of construction, otherwise it may behave as a reference counting handle.
Though COW ...
How to find the kth smallest element in the union of two sorted arrays?
...; issorted(firstb, lastb, less));
for ( ; ; ) {
assert(n < static_cast<size_t>((lasta - firsta) + (lastb - firstb)));
if (firsta == lasta) return *(firstb + n);
if (firstb == lastb) return *(firsta + n);
size_t mida = (lasta - firsta) / 2;
size_t midb = (lastb - first...
How to get first and last day of previous month (with timestamp) in SQL Server
...
Not thinking CONVERT is the best solution if CAST is available
– Kennah
Jun 28 '19 at 19:29
...
Java 8: Lambda-Streams, Filter by Method with Exception
...n method.get();
} catch (AdapterException e) {
throw x.cast(e.getCause());
}
}
@Override
public <A, R> R collect(Collector<T, A, R> collector) throws X {
return unmaskException(() -> delegate.collect(collector));
}
}
Then you coul...
Performance optimization strategies of last resort [closed]
... clear on a load op. Find places where floats, vectors, and ints are being cast to one another and eliminate them. Use __restrict liberally to promise the compiler about aliasing.
Microcoded operations. Most processors have some operations that cannot be pipelined, but instead run a tiny subroutine ...