Some Temp Notes

inline double getTime() {
	return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
}
std::this_thread::sleep_for(std::chrono::milliseconds(1000));  // replace for usleep
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &time);

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

#define Debug(...) printf(__VA_ARGS__)
Debug(“Y = %d\n”, y);
// 编译器会把宏的调用替换成：
printf(“Y = %d\n”, y);
// Debug()是一个可变参数宏，能在每一次调用中传递不同数目的参数：
Debug(“test”); // 一个参数

if (inputs.size() == 2) {  // SSE
    unsigned char* inputPtr0 = (unsigned char*)inputs[0];
    unsigned char* inputPtr1 = (unsigned char*)inputs[1];
    const int blockSize = 16; // 16 * 8bit
    int i = 0;
    for (; i < width*height*storageChannel - blockSize; i += blockSize) {
        __m128i m1 = _mm_loadu_si128((__m128i*)&inputPtr0[i]);
        __m128i m2 = _mm_loadu_si128((__m128i*)&inputPtr1[i]);
        __m128i m3 = _mm_avg_epu8(m1, m2);  // TODO: diff, round not floor
        _mm_storeu_si128((__m128i*)&dst[i], m3);
    }
    for (; i < width*height*storageChannel; i++) {
        dst[i] = clampInt((unsigned int)inputPtr0[i] + inputPtr1[i], 0, 255);
    }
    break;
}

class A {
public:
  int val = 100;
  A() {
    std::cout << "hi";
  }
  ~A() {
    std::cout << "111l";
  }
};
typedef std::vector<std::shared_ptr<A>*> PtrVector;
typedef std::vector<std::shared_ptr<A>> PtrVector1;
int main(int argc, char *argv[])
{
  PtrVector v(1);
  {
    std::shared_ptr<A> p1(new A);
    v[0] = &p1;
  }
  {
    std::shared_ptr<A> p2 = *(v[0]);
    PtrVector1 v2(1);
    v2[0] = p2;
  }
  std::cout<<v.size();
    QApplication a(argc, argv);
    qweb w;
    w.show();
    return a.exec();
}

sudo aptitude search binutils
sudo aptitude install binutils-2.26  # 安装特定版本ld链接程序
# 或者，用 apt-get, 在之前可以update upgrade一下
sudo apt-cache search binutils
sudo apt-get install binutils-2.26