Chromium Code Reviews Chromium Code Reviews
Issue 1457673002:
styleguide: Allow enable_if, conditional, and other type_traits. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master| OLD | NEW |
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| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <!-- | 2 <!-- |
| 3 Copyright 2014 The Chromium Authors. All rights reserved. | 3 Copyright 2014 The Chromium Authors. All rights reserved. |
| 4 Use of this source code is governed by a BSD-style license that can be | 4 Use of this source code is governed by a BSD-style license that can be |
| 5 found in the LICENSE file. | 5 found in the LICENSE file. |
| 6 --> | 6 --> |
| 7 <html> | 7 <html> |
| 8 <head> | 8 <head> |
| 9 <meta charset="utf-8"> | 9 <meta charset="utf-8"> |
| 10 <title>C++11 use in Chromium</title> | 10 <title>C++11 use in Chromium</title> |
| (...skipping 280 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
| 291 | 291 |
| 292 <tr> | 292 <tr> |
| 293 <td>Move Semantics</td> | 293 <td>Move Semantics</td> |
| 294 <td><code>std::move()</code></td> | 294 <td><code>std::move()</code></td> |
| 295 <td>Facilitates efficient move operations</td> | 295 <td>Facilitates efficient move operations</td> |
| 296 <td><a href="http://en.cppreference.com/w/cpp/utility/move"> | 296 <td><a href="http://en.cppreference.com/w/cpp/utility/move"> |
| 297 <code>std::move</code> reference</a></td> | 297 <code>std::move</code> reference</a></td> |
| 298 <td>Note: std::move() is allowed but writing your own move constructors is still only allowed in exceptional cases for now, see 'Rvalue References (and Move Sem antics)'. <a href='https://groups.google.com/a/chromium.org/forum/#!topic/cxx/x_ dWFxJFdbM'>Discussion thread</a></td> | 298 <td>Note: std::move() is allowed but writing your own move constructors is still only allowed in exceptional cases for now, see 'Rvalue References (and Move Sem antics)'. <a href='https://groups.google.com/a/chromium.org/forum/#!topic/cxx/x_ dWFxJFdbM'>Discussion thread</a></td> |
| 299 </tr> | 299 </tr> |
| 300 | 300 |
| 301 <tr> | |
| 302 <td>Conditional Type Selection</td> | |
| 303 <td><code>std::enable_if</code> and <code>std::conditional</code></td> | |
| 304 <td>Enables compile-time conditional type selection</td> | |
| 305 <td><a href="http://en.cppreference.com/w/cpp/types/enable_if"> | |
| 306 std::enable_if</a> and | |
| 307 <a href="http://en.cppreference.com/w/cpp/types/conditional"> | |
| 308 conditional</a></td> | |
| 309 <td><a href='https://groups.google.com/a/chromium.org/forum/#!topic/cxx/vCxo4tZN d_M'>Discussion thread</a></td> | |
|
Nico
2015/11/18 01:38:19
like the other one maybe this could also have a "u
vmpstr
2015/11/18 05:44:18
Added "usage should be rare" to sound all formal a
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| 310 </tr> | |
| 311 | |
| 312 <tr> | |
| 313 <td>Type Traits</td> | |
| 314 <td>Class templates within <code><type_traits></code></td> | |
| 315 <td>Allows compile-time inspection of the properties of types</td> | |
| 316 <td><a href="http://en.cppreference.com/w/cpp/header/type_traits"> | |
| 317 Standard library header <type_traits></a></td> | |
| 318 <td>Note that not all type traits are available on all platforms (eg std::underl ying_type doesn't work in libstdc++4.6). Use judiciously. <a href='https://group s.google.com/a/chromium.org/forum/#!topic/cxx/vCxo4tZNd_M'>Discussion thread</a> </td> | |
| 319 </tr> | |
| 320 | |
| 301 </tbody> | 321 </tbody> |
| 302 </table> | 322 </table> |
| 303 | 323 |
| 304 <h2 id="blacklist">C++11 Blacklist (Disallowed and Banned Features)</h2> | 324 <h2 id="blacklist">C++11 Blacklist (Disallowed and Banned Features)</h2> |
| 305 | 325 |
| 306 <p>This section lists features that are not allowed to be used yet. | 326 <p>This section lists features that are not allowed to be used yet. |
| 307 | 327 |
| 308 <h3 id="blacklist_banned">C++11 Banned Features</h3> | 328 <h3 id="blacklist_banned">C++11 Banned Features</h3> |
| 309 | 329 |
| 310 <p>This section lists C++11 features that are not allowed in the Chromium | 330 <p>This section lists C++11 features that are not allowed in the Chromium |
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| 669 <tr> | 689 <tr> |
| 670 <td>Complex Inverse Trigonometric and Hyperbolic Functions</td> | 690 <td>Complex Inverse Trigonometric and Hyperbolic Functions</td> |
| 671 <td>Functions within <code><complex></code></td> | 691 <td>Functions within <code><complex></code></td> |
| 672 <td>Adds inverse trigonomentric and hyperbolic non-member functions to | 692 <td>Adds inverse trigonomentric and hyperbolic non-member functions to |
| 673 the <code><complex></code> library.</td> | 693 the <code><complex></code> library.</td> |
| 674 <td><a href="http://en.cppreference.com/w/cpp/numeric/complex">std::complex</a>< /td> | 694 <td><a href="http://en.cppreference.com/w/cpp/numeric/complex">std::complex</a>< /td> |
| 675 <td></td> | 695 <td></td> |
| 676 </tr> | 696 </tr> |
| 677 | 697 |
| 678 <tr> | 698 <tr> |
| 679 <td>Conditional Type Selection</td> | |
| 680 <td><code>std::enable_if</code> and <code>std::conditional</code></td> | |
| 681 <td>Enables compile-time conditional type selection</td> | |
| 682 <td><a href="http://en.cppreference.com/w/cpp/types/enable_if"> | |
| 683 std::enable_if</a> and | |
| 684 <a href="http://en.cppreference.com/w/cpp/types/conditional"> | |
| 685 conditional</a></td> | |
| 686 <td></td> | |
| 687 </tr> | |
| 688 | |
| 689 <tr> | |
| 690 <td>Constant Iterator Methods on Containers</td> | 699 <td>Constant Iterator Methods on Containers</td> |
| 691 <td><code>std::cbegin()</code> and <code>std::cend()</code></td> | 700 <td><code>std::cbegin()</code> and <code>std::cend()</code></td> |
| 692 <td>Enforces iteration methods that don't change container contents</td> | 701 <td>Enforces iteration methods that don't change container contents</td> |
| 693 <td>TODO: documentation link</td> | 702 <td>TODO: documentation link</td> |
| 694 <td></td> | 703 <td></td> |
| 695 </tr> | 704 </tr> |
| 696 | 705 |
| 697 <tr> | 706 <tr> |
| 698 <td>Construct Elements in Containers</td> | 707 <td>Construct Elements in Containers</td> |
| 699 <td><code>emplace()</code>,<code>emplace_back()</code>, | 708 <td><code>emplace()</code>,<code>emplace_back()</code>, |
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| 959 <td><a href="http://en.cppreference.com/w/cpp/types/type_index"> | 968 <td><a href="http://en.cppreference.com/w/cpp/types/type_index"> |
| 960 std::type_index</a> and | 969 std::type_index</a> and |
| 961 <a href="http://en.cppreference.com/w/cpp/types/type_info/hash_code"> | 970 <a href="http://en.cppreference.com/w/cpp/types/type_info/hash_code"> |
| 962 std::type_info::hash_code</a></td> | 971 std::type_info::hash_code</a></td> |
| 963 <td><code>std::type_index</code> is a thin wrapper for | 972 <td><code>std::type_index</code> is a thin wrapper for |
| 964 <code>std::type_info</code>, allowing you to use it directly | 973 <code>std::type_info</code>, allowing you to use it directly |
| 965 within both associative and unordered containers</td> | 974 within both associative and unordered containers</td> |
| 966 </tr> | 975 </tr> |
| 967 | 976 |
| 968 <tr> | 977 <tr> |
| 969 <td>Type Traits</td> | |
| 970 <td>Class templates within <code><type_traits></code></td> | |
| 971 <td>Allows compile-time inspection of the properties of types</td> | |
| 972 <td><a href="http://en.cppreference.com/w/cpp/header/type_traits"> | |
| 973 Standard library header <type_traits></a></td> | |
| 974 <td></td> | |
| 975 </tr> | |
| 976 | |
| 977 <tr> | |
| 978 <td>Unique Pointers</td> | 978 <td>Unique Pointers</td> |
| 979 <td><code>std::unique_ptr<<i>type</i>></code></td> | 979 <td><code>std::unique_ptr<<i>type</i>></code></td> |
| 980 <td>Defines a pointer with clear and unambiguous ownership</td> | 980 <td>Defines a pointer with clear and unambiguous ownership</td> |
| 981 <td>TODO: documentation link</td> | 981 <td>TODO: documentation link</td> |
| 982 <td><a href="https://google.github.io/styleguide/cppguide.html#Ownership_and_Sma rt_Pointers"> | 982 <td><a href="https://google.github.io/styleguide/cppguide.html#Ownership_and_Sma rt_Pointers"> |
| 983 Ownership and Smart Pointers</a></td> | 983 Ownership and Smart Pointers</a></td> |
| 984 </tr> | 984 </tr> |
| 985 | 985 |
| 986 <tr> | 986 <tr> |
| 987 <td>Unordered Associative Containers</td> | 987 <td>Unordered Associative Containers</td> |
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| 1035 C++ Style Guide</a>. However, may be useful for | 1035 C++ Style Guide</a>. However, may be useful for |
| 1036 consuming non-ASCII data.</td> | 1036 consuming non-ASCII data.</td> |
| 1037 </tr> | 1037 </tr> |
| 1038 | 1038 |
| 1039 </tbody> | 1039 </tbody> |
| 1040 </table> | 1040 </table> |
| 1041 | 1041 |
| 1042 </div> | 1042 </div> |
| 1043 </body> | 1043 </body> |
| 1044 </html> | 1044 </html> |
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