C++17
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Usage status
This table lists C++14 and C++17 features and whether they can be used in Inkscape or not (yet). Add C++14 or C++17 features that you would like to use to the table, so that we know what to test for to increase the C++17 "allowance".
Feature | Since | Can use? | Comment |
---|---|---|---|
enum class |
C++11 | from 1.1 | Strong enum constants (take the name of the enum, can't be implicitly converted to int )
|
std::make_unique<Foo>(…) |
C++14 | from 1.1 | Replaces std::unique_ptr<Foo>(new Foo(…))
|
constexpr |
C++14 | from 1.1 | Declares a variable as usable in a const expression |
if constexpr |
C++17 | from 1.1 | Guarantees the branches will be decided at compile-time |
std::variant<…> |
C++17 | from 1.1 | Type-safe union, where the contained type is known at runtime |
std::optional<…> |
C++17 | from 1.1 | Object type (not a pointer or reference) which can either exist or be std::nullopt
|
auto [x, y] = foo(); |
C++17 | from 1.1 | Structured binding, for returning more than a single value |
toxic feature of doom | NO | Never use this (in case we stumble upon C++14/C++17 features that we really don't like) |
Platform status
We need to keep coordinated with the section on Distro Dependencies.
Also see this page:
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.
C++17 is well supported by all major compilers.
Compiler version when feature complete:
GCC | Clang | MSVC | |
---|---|---|---|
C++17 | 7 (2017) | 4 (2017) (5 for constexpr lambda expressions) | 19.14 (2017) |
C++20 | 10* | 10* | 19.22# |
'*' Mostly complete '#' About half complete