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Stack vs heap allocation of structs in Go, and how they relate to garbage collection
... on the stack and some on the heap. In some cases the compiler follows rigid rules (like "new always allocates on the heap") and in others the compiler does "escape analysis" to decide if an object can live on the stack or if it must be allocated on the heap.
In your example 2, escape analysis wou...
When is an interface with a default method initialized?
...tends J {
int k = Test.out("k", 5);
}
class Test {
public static void main(String[] args) {
System.out.println(J.i);
System.out.println(K.j);
}
static int out(String s, int i) {
System.out.println(s + "=" + i);
return i;
}
}
Its expected output i...
How do I choose grid and block dimensions for CUDA kernels?
This is a question about how to determine the CUDA grid, block and thread sizes. This is an additional question to the one posted here .
...
Apache Spark: map vs mapPartitions?
...ons)? Does it move data between nodes? I've been using mapPartitions to avoid moving data between nodes, but wasn't sure if flapMap would do so.
– Nicholas White
Jan 18 '14 at 10:52
...
Understanding the Event Loop
...run something asynchronously is by invoking one of the async functions provided by the node core library. Even if you are using an npm package that defines it's own API, in order to yield the event loop, eventually that npm package's code will call one of node core's async functions and that's when ...
C++ Dynamic Shared Library on Linux
...virtual otherwise linker will try to perform static linkage */
virtual void DoSomething();
private:
int x;
};
#endif
myclass.cc
#include "myclass.h"
#include <iostream>
using namespace std;
extern "C" MyClass* create_object()
{
return new MyClass;
}
extern "C" void destroy_object...
std::vector performance regression when enabling C++11
...me optimization (I also pass the -flto flag to gcc 4.7.2), the results are identical:
(I am compiling your original code, with container.push_back(Item());)
$ g++ -std=c++11 -O3 -flto regr.cpp && perf stat -r 10 ./a.out
Performance counter stats for './a.out' (10 runs):
35.426...
Java 8 Streams: multiple filters vs. complex condition
...le filter invocation using a lambda expression with &&.
But, as said, this kind of overhead will be eliminated by the HotSpot optimizer and is negligible.
In theory, two filters could be easier parallelized than a single filter but that’s only relevant for rather computational intense ta...
What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
...anteed to exist. It's an optional typedef that the implementation must provide iff it has an unsigned integer type of exactly 32-bits. Some have a 9-bit bytes for example, so they don't have a uint32_t.
uint_fast32_t states your intent clearly: it's a type of at least 32 bits which is the best from ...
Why does Unicorn need to be deployed together with Nginx?
...ing Unicorn without a reverse proxy. However, that wouldn't be a very good idea; let's see why.
Unicorn follows the Unix philosophy which is to do one thing and do it well, and that is to serve fast, low-latency clients (we'll see what this means later on). The fact that Unicorn is designed for fas...