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94 | 94 | \end{block} |
95 | 95 | \end{frame} |
96 | 96 |
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| 97 | +\begin{frame}[fragile] |
| 98 | + \frametitlecpp[98]{Chaining operators} |
| 99 | + \begin{block}{In general, return a reference to the left value} |
| 100 | + \begin{cppcode} |
| 101 | + struct Complex { |
| 102 | + float m_real, m_imaginary; |
| 103 | + Complex& operator=( const Complex& other ) { |
| 104 | + m_real = other.m_real; |
| 105 | + m_imaginary = other.m_imaginary; |
| 106 | + return *this; |
| 107 | + } |
| 108 | + }; |
| 109 | + Complex c1{2.f, 3.f}; |
| 110 | + Complex c2, c3; |
| 111 | + // right to left associativity |
| 112 | + c3 = c2 = c1; |
| 113 | + // left to right associativity |
| 114 | + std::cout << c1 << c2 << c3 << std::endl; |
| 115 | + \end{cppcode} |
| 116 | + \end{block} |
| 117 | +\end{frame} |
| 118 | + |
97 | 119 | \begin{frame}[fragile] |
98 | 120 | \frametitlecpp[98]{Friend declarations} |
99 | 121 | \begin{block}{Concept} |
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