Difference between revisions of "C++11"
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== | == Usage status == | ||
This table lists C++11 features and whether they can be used in Inkscape or not (yet). | |||
Add C++11 features that you would like to use to the table, so that we know what to test for to increase the C++11 "allowance". | Add C++11 features that you would like to use to the table, so that we know what to test for to increase the C++11 "allowance". | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! Feature | ! Feature !! Can use? !! Comment | ||
! Can use? | |||
! Comment | |||
|- | |- | ||
| unique_ptr<> | | std::unique_ptr<> || style="background: lightgreen;" | from 0.93 || Replaces boost::scoped_ptr<> and std::auto_ptr<> | ||
| style="background: | |||
| | |||
|- | |- | ||
| shared_ptr<> | | std::shared_ptr<> || style="background: lightgreen;" | from 0.93 || Replaces boost::shared_ptr<> | ||
| style="background: | |||
| | |||
|- | |- | ||
| | | std::unordered_*<> || style="background: lightgreen;" | from 0.93|| Replaces the hack in util/unordered-containers.h | ||
| style="background: | |||
| | |||
|- | |- | ||
| | | auto (type inference) || style="background: lightgreen;" | from 0.93 || | ||
| style="background: | |||
| | |||
|- | |- | ||
| | | enum class || not yet || Strong enum constants (take the name of the enum, can't be implicitly converted to <code>int</code>) | ||
| | |||
| | |||
|- | |- | ||
| | | range-based for || style="background: lightgreen;" | from 0.93 || Concise for loops with containers (Python alike) | ||
| style="background: | |||
| | |||
|- | |- | ||
| | | lambda functions || not yet || In-place definitions for small functions | ||
| style="background: | |- | ||
| | | constructor delegation || not yet || Reduces boilerplate when an object has many constructors | ||
|- | |||
| right angle brackets in templates || not yet || Fixes coding style oddity | |||
|- | |||
| async, futures || not yet || Allows easy multithreading | |||
|- | |||
| std::initializer_list || not yet || Easier container initialization/assignation and implicit constructor calls | |||
|- | |||
| [https://en.cppreference.com/w/cpp/language/constexpr constexpr] || | ? || Additional meanings in C++14/C++17 | |||
|- | |||
| toxic feature of doom || style="background: red;" | NO || Never use this (in case we stumble upon C++11 features that we really don't like) | |||
|} | |} | ||
== C++11 | == Platform status == | ||
The table lists C++11 features and whether they work in trunk on a certain platform as advertised. If all lights are green | |||
We need to keep coordinated with the section on [[Tracking_Dependencies#Distros|Distro Dependencies]]. | |||
Also see these pages: | |||
* http://wiki.apache.org/stdcxx/C++0xCompilerSupport | |||
* http://en.cppreference.com/w/cpp/compiler_support | |||
Note that <code>__cplusplus</code> is always <code>1</code> for GCC 4.6 that is used on Windows. So <code>#if __cplusplus < 201103L</code> or variants does not work to choose between C++03 or C++11 code. | |||
The table lists C++11 features and whether they work in trunk on a certain platform as advertised. If all lights are green ⇒ set the light to green in the Usage status section (taking current trunk version into account). | |||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! Feature | ! rowspan="2" | Feature !! Windows !! Mac 10.? !! macOS 10.14, Xcode 10 !! Fedora 20 !! Red Hat 7.0 !! Red Hat 6.5 !! rowspan="2" | Comment | ||
! Windows | |- | ||
! Mac | ! TDM-GCC 4.6/4.9 (x64) !! ? !! Clang 10 !! GCC 4.8.2 !! GCC 4.8.2 !! GCC 4.4.7 | ||
! | |- | ||
| unique_ptr<> || style="background: lightgreen;" | || || style="background: lightgreen;" | || style="background: lightgreen;" | || style="background: lightgreen;" | || || Defined in <memory> | |||
|- | |||
| shared_ptr<> || style="background: lightgreen;" | || || style="background: lightgreen;" | || style="background: lightgreen;" | || style="background: lightgreen;" | || || Defined in <memory> | |||
|- | |- | ||
| | | auto || style="background: lightgreen;" | || || style="background: lightgreen;" | || style="background: lightgreen;" | || style="background: lightgreen;" | || || | ||
| style="background: | |||
| | |||
| | |||
| | |||
| | |||
|- | |- | ||
| | | enum class || style="background: lightgreen;" | || || style="background: lightgreen;" | || style="background: lightgreen;" | || style="background: lightgreen;" | || || | ||
| style="background: | |||
| | |||
| | |||
| | |||
| | |||
|- | |- | ||
| | | range-based for || style="background: lightgreen;" | || || style="background: lightgreen;" | || style="background: lightgreen;" | || style="background: lightgreen;" | || || | ||
| style="background: | |||
| | |||
| | |||
| | |||
| | |||
|- | |- | ||
| | | constexpr || | || || style="background: lightgreen;" | || | || | || || | ||
| style="background: | |||
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| | |||
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|} | |} |
Revision as of 08:13, 8 June 2019
Usage status
This table lists C++11 features and whether they can be used in Inkscape or not (yet). Add C++11 features that you would like to use to the table, so that we know what to test for to increase the C++11 "allowance".
Feature | Can use? | Comment |
---|---|---|
std::unique_ptr<> | from 0.93 | Replaces boost::scoped_ptr<> and std::auto_ptr<> |
std::shared_ptr<> | from 0.93 | Replaces boost::shared_ptr<> |
std::unordered_*<> | from 0.93 | Replaces the hack in util/unordered-containers.h |
auto (type inference) | from 0.93 | |
enum class | not yet | Strong enum constants (take the name of the enum, can't be implicitly converted to int )
|
range-based for | from 0.93 | Concise for loops with containers (Python alike) |
lambda functions | not yet | In-place definitions for small functions |
constructor delegation | not yet | Reduces boilerplate when an object has many constructors |
right angle brackets in templates | not yet | Fixes coding style oddity |
async, futures | not yet | Allows easy multithreading |
std::initializer_list | not yet | Easier container initialization/assignation and implicit constructor calls |
constexpr | ? | Additional meanings in C++14/C++17 |
toxic feature of doom | NO | Never use this (in case we stumble upon C++11 features that we really don't like) |
Platform status
We need to keep coordinated with the section on Distro Dependencies.
Also see these pages:
- http://wiki.apache.org/stdcxx/C++0xCompilerSupport
- http://en.cppreference.com/w/cpp/compiler_support
Note that __cplusplus
is always 1
for GCC 4.6 that is used on Windows. So #if __cplusplus < 201103L
or variants does not work to choose between C++03 or C++11 code.
The table lists C++11 features and whether they work in trunk on a certain platform as advertised. If all lights are green ⇒ set the light to green in the Usage status section (taking current trunk version into account).
Feature | Windows | Mac 10.? | macOS 10.14, Xcode 10 | Fedora 20 | Red Hat 7.0 | Red Hat 6.5 | Comment |
---|---|---|---|---|---|---|---|
TDM-GCC 4.6/4.9 (x64) | ? | Clang 10 | GCC 4.8.2 | GCC 4.8.2 | GCC 4.4.7 | ||
unique_ptr<> | Defined in <memory> | ||||||
shared_ptr<> | Defined in <memory> | ||||||
auto | |||||||
enum class | |||||||
range-based for | |||||||
constexpr |