Method NonCopyableInt

tests/test_sequences_and_iterators.cpp:69–69

class NonCopyableInt {
public:
    explicit NonCopyableInt(int value) : value_(value) {}
    NonCopyableInt(const NonCopyableInt &) = delete;
    NonCopyableInt(NonCopyableInt &&other) noexcept : value_(other.value_) {
        other.value_ = -1; // detect when an unwanted move occurs