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| <H1><a name="CPlusPlus17">9 SWIG and C++17</a></H1> |
| <!-- INDEX --> |
| <div class="sectiontoc"> |
| <ul> |
| <li><a href="#CPlusPlus17_introduction">Introduction</a> |
| <li><a href="#CPlusPlus17_core_language_changes">Core language changes</a> |
| <ul> |
| <li><a href="#CPlusPlus17_nested_namespaces">Nested namespace definitions</a> |
| <li><a href="#CPlusPlus17_u8_char_literals">UTF-8 character literals</a> |
| <li><a href="#CPlusPlus17_hexadecimal_floating_literals">Hexadecimal floating literals</a> |
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| <li><a href="#CPlusPlus17_standard_library_changes">Standard library changes</a> |
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| <!-- INDEX --> |
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| <H2><a name="CPlusPlus17_introduction">9.1 Introduction</a></H2> |
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| |
| <p>This chapter gives you a brief overview about the SWIG |
| implementation of the C++17 standard. |
| There isn't much in C++17 that affects SWIG, however, work has only just begun on adding |
| C++17 support. |
| </p> |
| |
| <p> |
| <b>Compatibility note:</b> SWIG-4.0.0 is the first version to support any C++17 features. |
| </p> |
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| <H2><a name="CPlusPlus17_core_language_changes">9.2 Core language changes</a></H2> |
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| <H3><a name="CPlusPlus17_nested_namespaces">9.2.1 Nested namespace definitions</a></H3> |
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| |
| <p> |
| C++17 offers a more concise syntax for defining namespaces. |
| SWIG has support for nested namespace definitions such as: |
| </p> |
| |
| <div class="code"> |
| <pre> |
| namespace A::B::C { |
| ... |
| } |
| </pre> |
| </div> |
| |
| <p> |
| This is the equivalent to the C++98 namespace definitions: |
| </p> |
| |
| <div class="code"> |
| <pre> |
| namespace A { |
| namespace B { |
| namespace C { |
| ... |
| } |
| } |
| } |
| </pre> |
| </div> |
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| <H3><a name="CPlusPlus17_u8_char_literals">9.2.2 UTF-8 character literals</a></H3> |
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| <p> |
| C++17 added UTF-8 (u8) character literals. |
| These are of type char. |
| Example: |
| </p> |
| |
| <div class="code"> |
| <pre> |
| char a = u8'a'; |
| </pre> |
| </div> |
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| <H3><a name="CPlusPlus17_hexadecimal_floating_literals">9.2.3 Hexadecimal floating literals</a></H3> |
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| |
| <p> |
| C++17 added hexadecimal floating literals. |
| For example: |
| </p> |
| |
| <div class="code"> |
| <pre> |
| double f = 0xF.68p2; |
| </pre> |
| </div> |
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| <H2><a name="CPlusPlus17_standard_library_changes">9.3 Standard library changes</a></H2> |
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