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Add type_caster<std::monostate> (#3818)

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* Add type_caster<std::monostate> for std::variant

Add type_caster<std::monostate>, allowing std::variant<std::monostate, ...>

* Add  variant<std::monostate, ...> test methods

* Add std::monostate tests

* Update test_stl.py

Remove erroneous extra tests

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update test fn name

* And update the doc() test

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
This commit is contained in:
Laramie Leavitt
2022-03-21 22:58:04 -07:00
committed by GitHub
parent 67089cd3e6
commit b22ee64c73
3 changed files with 37 additions and 2 deletions
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3
include/pybind11/stl.h
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@@ -406,6 +406,9 @@ struct variant_caster<V<Ts...>> {
#if defined(PYBIND11_HAS_VARIANT)
template <typename... Ts>
struct type_caster<std::variant<Ts...>> : variant_caster<std::variant<Ts...>> {};
template <>
struct type_caster<std::monostate> : public void_caster<std::monostate> {};
#endif
PYBIND11_NAMESPACE_END(detail)