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21 lines
376 B
C++
21 lines
376 B
C++
#pragma once
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template<typename T>
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class singleton {
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public:
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static T& instance();
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singleton(const singleton&) = delete;
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singleton& operator= (singleton) = delete;
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protected:
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struct token {};
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singleton() = default;
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};
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#include <memory>
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template<typename T>
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T& singleton<T>::instance() {
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static const std::unique_ptr<T> instance{ new T{token{}} };
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return *instance;
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} |