Re: memory leaks

"James Kanze" <james.kanze@gmail.com> ha scritto nel messaggio
news:4d4a6dae-1a50-4e01-9fbe-4bb005e180bd@f12g2000yqn.googlegroups.com...


this seems untrue for std::vector<T> data_;
for T == struct Color3d{double r, g, b;};

#include <iostream>
#include <cstdlib>
#include <stdint.h>
#include <vector>

#define u8 uint8_t
#define i8 int8_t
#define u32 uint32_t
#define i32 int32_t
// float 32 bits
#define f32 float

#define S sizeof
#define R return
#define P printf
#define F for

using namespace std;

template <typename T>
class Image
{
    class Indexer
    {
    public:
        Indexer(T* data) : data_(data)
        {
        }

        T& operator[](int x) const
        {
            return data_[x];
        }

    private:
        T* data_;
    };

    class ConstIndexer
    {
    public:
        ConstIndexer(const T* data) : data_(data)
        {
        }

        T operator[](int x) const
        {
            return data_[x];
        }

    private:
        const T* data_;
    };

public:
    Image(int width, int height) :
        width_(width),
        height_(height),
        data_(width*height)
    {
    }

    int width() const
    {
        return width_;
    }

    int height() const
    {
        return height_;
    }

    Indexer operator[](int y)
    {
        return Indexer(&data_[y*width_]);
    }

    ConstIndexer operator[](int y) const
    {
        return ConstIndexer(&data_[y*width_]);
    }

private:
    int width_;
    int height_;
    std::vector<T> data_;
};

struct Color3d
{
    double r, g, b;
};

void fill(Image<Color3d>& img, Color3d color)
{
    for (int y = 0; y < img.height(); ++y)
        for (int x = 0; x < img.width(); ++x)
            img[y][x] = color;
}

int main(void)
{Color3d h={0.78373, 0.1383, 1-0.78373-0.1383};
 Image<Color3d> g(768, 1024);
// cout << "a=" << Image::a << "\n" ;
 cout << "Inizio\n";

 fill(g, h);
 cout << "(r,g,b)==(" << g[0][0].r << ", "
                      << g[0][0].g << ", "
                      << g[768][1024].b << ")\n";
 cout << "end\n";
 return 0;
}
-------
result
Inizio
(r,g,b)==(0.78373, 0.1383, 0.07797)
end