Method getValue

ext/catch.hpp:2446–2448

    BetweenGenerator( T from, T to ) : m_from( from ), m_to( to ){}

    virtual T getValue( std::size_t index ) const {
        return m_from+static_cast<int>( index );
    }

    virtual std::size_t size() const {
        return static_cast<std::size_t>( 1+m_to-m_from );