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## Class scoped_connection

boost::signals::scoped_connection — Limits a signal-slot connection lifetime to a particular scope.

## Synopsis

    class scoped_connection : private noncopyable   // Exposition only
    {
    public:
      // construct/copy/destruct
      scoped_connection(const connection&);
      ~scoped_connection();

      // connection management
      void disconnect() const;
      bool connected() const;
    };

## Description

### `scoped_connection` public construct/copy/destruct

1.     scoped_connection(const connection& other);

   Effects: | `this` references the connection referenced by `other`.
   Throws: | Will not throw.

2.     ~scoped_connection();

   Effects: | If `this->connected()`, disconnects the signal-slot connection.

### `scoped_connection` connection management

1.     void disconnect() const;

   Effects: | If `this->connected()`, disconnects the signal and slot referenced by this; otherwise, this operation is a no-op.
   Postconditions: | `!this->connected()`.

2.     bool connected() const;

   Returns: | `true` if this references a non-NULL connection that is still active (connected), and `false` otherwise.
   Throws: | Will not throw.