(structtimeval*start,structtimeval*end){return(end->tv_sec-start->tv_sec)+1e-6*(end->tv_usec-start->tv_usec);}constexprintWIDTH=1000000;intmain(){structtimeval start{};structtimeval end{};intmax;int*arr=newint[WIDTH];std::srand(std::time(nullptr));for(size_t i=0;i<WIDTH;i++...
// use_native_type_in_clr_2.cpp // compile with: /clr #using "use_native_type_in_clr.dll" // Uncomment the following 3 lines to resolve. // public struct NativeClass { // static int Test() { return 98; } // }; int main() { ManagedClass x; x.Test(); System::Console::...
// shared_ptr-examples.cpp // The following examples assume these declarations: #include <algorithm> #include <iostream> #include <memory> #include <string> #include <vector> struct MediaAsset { virtual ~MediaAsset() = default; // make it polymorphic }; struct Song : public MediaAsset { ...
struct cat { template <class Self> void lick_paw(this Self&& self); }; The template parameter Self will be deduced based on all of the same template deduction rules you’re already familiar with. There’s no additional magic. You don’t have to use the names Self and self, but I th...
Also See: Use std::pair as key to std::unordered_map in C++ Use custom objects as keys to std::map in C++ Use struct as key to std::unordered_map in C++ Rate this post Average rating 4.5/5. Vote count: 18 Hashing Thanks for reading. To share your code in the comments, please...
Use thegetnameinfoFunction to IP Address to Host Name in C Thegetnameinfofunction is used in conjunction withgetaddrinfoin this case, and it retrieves the hostnames for corresponding IP addresses. Notice that we process the user input from the first command-line argument and pass it as theget...
Read the arguments to VirtualAlloc() in the question again: the two allocations use two different ranges of pages. I'm having a similar problem, where code that walks the virtual space calling VirtualAlloc() with specific base addresses fails to find *any* allocatable space within a 1 GB ...
This sample demonstrates how to declare, instantiate, and call unbound delegates: C++ // unbound_delegates.cpp// compile with: /clrrefstructA{A(){} A(inti) : m_i(i) {}voidPrint(inti){ System::Console::WriteLine(m_i + i);}private:intm_i; }; valuestructV{voidPrint(){ System::...
In rare cases, you might want deduction guides to reject certain code. Here’s howstd::arraydoes it: Copy C:\Temp>type enforce.cpp #include <stddef.h> #include <type_traits> template <typename T, size_t N> struct MyArray {
In cool leg, we teach CS undergrads to protect their multi-threaded data structures with a lock. This is probably a Test-and-Set (TAS) lock, and if they went to a good university, they have a homework assignment where they are told to uselock cmpxchgto implement a mutex. Once they're...