Connection a QVector<QSlider *> adequately

[Lykurg]

Well, "i" is the index of the slider that has been changed.

You can't pass values that way!

I want to solve elegantly the problem of handling each slider in a similar way:
If I had eg 5 methods

public slots:
    void adequate_function0(int value);
    void adequate_function1(int value);
    void adequate_function2(int value);
    void adequate_function3(int value);
    void adequate_function4(int value);

public slots:
    void adequate_function0(int value);
    void adequate_function1(int value);
    void adequate_function2(int value);
    void adequate_function3(int value);
    void adequate_function4(int value);

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I could do something similar.

Use a signal mapper as JimDaniel has suggested or sender() in your slot to get the sender.