47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#include <iostream>
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#include <map>
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#include <vector>
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#include <string>
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class LargeClass {
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public:
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std::vector<int> data;
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std::string name;
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LargeClass(int size, const std::string& n) : data(size), name(n) {
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// simulate work in the constructor
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for (int i = 0; i < size; ++i) {
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data[i] = i;
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}
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}
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// define a copy constructor for demonstration purposes
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LargeClass(const LargeClass& other) : data(other.data), name(other.name) {
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// std::cout << "Copy constructor called\n";
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}
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// define a move constructor
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LargeClass(LargeClass&& other) noexcept : data(std::move(other.data)), name(std::move(other.name)) {
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// std::cout << "Move constructor called\n";
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}
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// for demonstration, printing the object contents
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void print() const {
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std::cout << name << ": " << data[0] << "..." << data[data.size() - 1] << std::endl;
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}
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};
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int main() {
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const int num_elements = 10000000;
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const int map_size = 10;
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std::map<int, LargeClass> map_insert;
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for (int i = 0; i < map_size; ++i) {
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map_insert.insert({i, LargeClass(num_elements, "Insert_" + std::to_string(i))});
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}
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return 0;
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}
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