C++11 Scope Guard. I.e. Class which will run some lambda which is set in constructor.

ScopeGuard.hpp

//
// Created by willir on 6/2/15.
//

#ifndef QRCODEGEN_SCOPEGUARD_H
#define QRCODEGEN_SCOPEGUARD_H

#include <functional>

/**
 * @brief The ScopeGuard class for run some code while exits outside scope.
 */
class ScopeGuard {
public:
    /**
     * @brief ScopeGuard
     * @param fn Labmda which will be called in destructor
     */
    ScopeGuard(const std::function<void()> &fn) : mFunc(fn) {}
    ScopeGuard(std::function<void()> &&fn) : mFunc(std::move(fn)) {}
    ~ScopeGuard() {
        if(mIsEnable) {
            mFunc();
        }
    }

    /**
     * @brief disable Disables ScopeGuard. So labmda will not be called in destructor.
     * By default it is enabled.
     */
    void disable()   { mIsEnable = false; }
    void enable()    { mIsEnable = true;  }
    bool isEnabled() { return mIsEnable;  }

private:
    std::function<void()> mFunc;
    bool mIsEnable = true;
};

#endif //QRCODEGEN_SCOPEGUARD_H