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True typedefs

Listing 2: The true_typedef class implementation

Listing 2: The true_typedef class implementation

/* /////////////////////////////////////////////////////////////
 * ...
 * Extract from stlsoft_true_typedef.h
 * www:        http://www.synesis.com.au/stlsoft
 *             http://www.stlsoft.org/
 * Copyright (C) 2002, Synesis Software Pty Ltd.
 * (Licensed under the Synesis Software Standard Source License:
 *  http://www.synesis.com.au/licenses/ssssl.html)
 * ...
 * ////////////////////////////////////////////////////////// */


template <ss_typename_param_k T, ss_typename_param_k U>
class true_typedef
    typedef T                   value_type;
    typedef U                   unique_type;
    typedef true_typedef<T, U>  class_type;

// Construction
        : m_value(value_type())
    ss_explicit_k true_typedef(const T &value)
        : m_value(value)
    true_typedef(const class_type &rhs)
        : m_value(rhs.m_value)

    const class_type &operator =(const class_type &rhs)
        m_value = rhs.m_value;

        return *this;

// Accessors
    const value_type &base_type_value() const
        return m_value;
    value_type &base_type_value()
        return m_value;

// Members
    value_type  m_value;

// Implementation
    // Not provided, as the syntax is less ambiguous when
    // assignment from an explicit temporary is required
    const class_type &operator =(const T &value);

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