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How do I pass a variable by reference?
...with the function, the original pointer still pointed to the same address. C++ introduced references, which behaved differently.
– Blair Conrad
Jun 12 '09 at 12:09
35
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Embedding unmanaged dll into a managed C# dll
I have a managed C# dll that uses an unmanaged C++ dll using DLLImport. All is working great.
However, I want to embed that unmanaged DLL inside my managed DLL as explain by Microsoft there:
...
How is Math.Pow() implemented in .NET Framework?
...
That means that the method is actually implemented in the CLR, written in C++. The just-in-time compiler consults a table with internally implemented methods and compiles the call to the C++ function directly.
Having a look at the code requires the source code for the CLR. You can get that from the...
Haskell: Lists, Arrays, Vectors, Sequences
...stants when objects in memory are not laid out next to each other. So, in C++ std::vector has faster "snoc" (putting objects at the end) than any pure linked list data structure I know of, although this is not a persistant data structure so less friendly than Haskell's lists.
The third problem wit...
Pointer expressions: *ptr++, *++ptr and ++*ptr
...troyed here!!!
Why does it matter? Well in C that's not so important. In C++ though ptr might be a complex type like an iterator. For example
for (std::set<int>::iterator it = someSet.begin(); it != someSet.end(); it++)
In this case, because it is a complex type it++ maybe have side effe...
What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and
...t limited in terms of languages supported out of the box (it only supports C++, Python and Java) but it does have a lot of third-party support for other languages (of highly variable quality). Google does pretty much all of their work using Protocol Buffers, so it is a battle-tested, battle-hardene...
Which is faster: Stack allocation or Heap allocation
... array on the Stack it would give you a Stack Overflow. Try for example in C++ this: int t[100000000]; Try for example t[10000000] = 10; and then cout << t[10000000]; It should give you a stack overflow or just won't work and won't show you anything. But if you allocate the array on the heap: ...
How should I have explained the difference between an Interface and an Abstract class?
...suppose it's also worth pointing out that Java 8 has finally admitted that C++ was right and that multiple inheritance can be done and can have a use and so interfaces can now define not just function signatures but also provide default implementations. As such, using an interface would be preferabl...
When does invoking a member function on a null instance result in undefined behavior?
...nderstand is why it's undefined behavior to dereference a null pointer. In C++03, there's actually a bit of ambiguity here.
Although "dereferencing a null pointer results in undefined behavior" is mentioned in notes in both §1.9/4 and §8.3.2/4, it's never explicitly stated. (Notes are non-normati...
Finding all possible combinations of numbers to reach a given sum
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C++ version of the same algorithm
#include <iostream>
#include <list>
void subset_sum_recursive(std::list<int> numbers, int target, std::list<int> partial)
{
int s = 0;
for (std::list&...