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Call Go functions from C
..., we can assign it its own type:
type ProgressHandler func(current, total uint64, userdata interface{}) int
This handler takes some progress info (current number of files received and total number of files) along with an interface{} value which can hold anything the user needs it to hold.
Now we...
How to Calculate Execution Time of a Code Snippet in C++
... if already defined */
typedef long long int64; typedef unsigned long long uint64;
/* Returns the amount of milliseconds elapsed since the UNIX epoch. Works on both
* windows and linux. */
uint64 GetTimeMs64()
{
#ifdef _WIN32
/* Windows */
FILETIME ft;
LARGE_INTEGER li;
/* Get the amount of ...
GridCtrl 控件FAQ - C/C++ - 清泛网 - 专注C/C++及内核技术
...某个单元格为只读
BOOL CGridCtrl::SetItemState(int nRow, int nCol, UINT state)
一般需配合使用UINT CGridCtrl::GetItemState(int nRow, int nCol) const
比如将单元格（1，1）设为只读
CGridCtrlObject.SetItemState(1,1, m_Grid.GetItemState(1,1) | GVIS_READONLY);
将单元格...
How do I write a short literal in C++?
...r-defined literals" to learn more.)
#include <cstdint>
inline std::uint16_t operator "" _u(unsigned long long value)
{
return static_cast<std::uint16_t>(value);
}
void func(std::uint32_t value); // 1
void func(std::uint16_t value); // 2
func(0x1234U); // calls 1
func(0x1234_u); /...
How do you format an unsigned long long int using printf?
...sing the inttypes.h library that gives you types such as
int32_t, int64_t, uint64_t etc.
You can then use its macros such as:
uint64_t x;
uint32_t y;
printf("x: %"PRId64", y: %"PRId32"\n", x, y);
This is "guaranteed" to not give you the same trouble as long, unsigned long long etc, since you don...
How to shut down the computer from C#
..."SeShutdownPrivilege";
const short SE_PRIVILEGE_ENABLED = 2;
const uint EWX_SHUTDOWN = 1;
const short TOKEN_ADJUST_PRIVILEGES = 32;
const short TOKEN_QUERY = 8;
IntPtr hToken;
TOKEN_PRIVILEGES tkp;
// Get shutdown privileges...
OpenProcessToken(Process.GetCurrentProc...
Concept of void pointer in C programming
...t be aligned at 4-byte boundary to be dereferenced).
For example, reading uint16_t from void*:
/* may receive wrong value if ptr is not 2-byte aligned */
uint16_t value = *(uint16_t*)ptr;
/* portable way of reading a little-endian value */
uint16_t value = *(uint8_t*)ptr
| ((*((uin...
What's the difference between deque and list STL containers?
...<unordered_map>
using namespace std;
struct MapEntry {
list<uint64_t>::iterator LRU_entry;
uint64_t CpuPtr;
};
typedef unordered_map<uint64_t,MapEntry> Table;
typedef list<uint64_t> FIFO;
FIFO LRU; // LRU list at a given priority
Table DeviceBuffer; // Table ...
Is gcc std::unordered_map implementation slow? If so - why?
...he code will rehash.
#define SIZE 10000000
#define DEPTH 3
std::vector<uint64_t> vec(SIZE);
boost::mt19937 rng;
boost::uniform_int<uint64_t> dist(std::numeric_limits<uint64_t>::min(),
std::numeric_limits<uint64_t>::max());
std::unordered_map...
ArrayBuffer to base64 encoded string
... _arrayBufferToBase64( buffer ) {
var binary = '';
var bytes = new Uint8Array( buffer );
var len = bytes.byteLength;
for (var i = 0; i < len; i++) {
binary += String.fromCharCode( bytes[ i ] );
}
return window.btoa( binary );
}
but, non-native implementations are...