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38 lines
724 B
C++
38 lines
724 B
C++
#include <cassert>
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#include <iostream>
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#include <memory>
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#include <vector>
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void simple() {
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// From Wikipedia.
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std::unique_ptr<int> p1(new int(5));
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// Compile error - can't copy p1!
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// std::unique_ptr<int> p2 = p1;
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assert(p1 != NULL);
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// Transfers ownership. p3 now owns the memory and p1 is rendered invalid:
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std::unique_ptr<int> p3 = std::move(p1);
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assert(p1 == NULL && p3 != NULL);
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}
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void container() {
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std::vector<std::unique_ptr<int>> v;
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std::unique_ptr<int> q(new int(42));
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assert(q != NULL);
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// v.push_back(q); <- Compile error
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v.push_back(std::move(q));
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assert(q == NULL);
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for (auto &e : v) {
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std::cout << *e << std::endl;
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}
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}
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int main(void) {
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simple();
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container();
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}
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