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Adds type_caster support for std::deque. (#1609)
* Adds std::deque to the types supported by list_caster in stl.h. * Adds a new test_deque test in test_stl.{py,cpp}. * Updates the documentation to include std::deque as a default supported type.
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@ -5,7 +5,7 @@ Automatic conversion
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====================
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When including the additional header file :file:`pybind11/stl.h`, conversions
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between ``std::vector<>``/``std::list<>``/``std::array<>``,
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between ``std::vector<>``/``std::deque<>``/``std::list<>``/``std::array<>``,
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``std::set<>``/``std::unordered_set<>``, and
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``std::map<>``/``std::unordered_map<>`` and the Python ``list``, ``set`` and
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``dict`` data structures are automatically enabled. The types ``std::pair<>``
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@ -16,6 +16,7 @@
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#include <unordered_map>
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#include <iostream>
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#include <list>
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#include <deque>
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#include <valarray>
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#if defined(_MSC_VER)
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@ -185,6 +186,9 @@ public:
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template <typename Type, typename Alloc> struct type_caster<std::vector<Type, Alloc>>
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: list_caster<std::vector<Type, Alloc>, Type> { };
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template <typename Type, typename Alloc> struct type_caster<std::deque<Type, Alloc>>
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: list_caster<std::deque<Type, Alloc>, Type> { };
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template <typename Type, typename Alloc> struct type_caster<std::list<Type, Alloc>>
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: list_caster<std::list<Type, Alloc>, Type> { };
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@ -63,6 +63,10 @@ TEST_SUBMODULE(stl, m) {
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static std::vector<RValueCaster> lvv{2};
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m.def("cast_ptr_vector", []() { return &lvv; });
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// test_deque
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m.def("cast_deque", []() { return std::deque<int>{1}; });
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m.def("load_deque", [](const std::deque<int> &v) { return v.at(0) == 1 && v.at(1) == 2; });
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// test_array
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m.def("cast_array", []() { return std::array<int, 2> {{1 , 2}}; });
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m.def("load_array", [](const std::array<int, 2> &a) { return a[0] == 1 && a[1] == 2; });
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@ -23,6 +23,15 @@ def test_vector(doc):
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assert m.cast_ptr_vector() == ["lvalue", "lvalue"]
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def test_deque(doc):
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"""std::deque <-> list"""
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lst = m.cast_deque()
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assert lst == [1]
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lst.append(2)
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assert m.load_deque(lst)
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assert m.load_deque(tuple(lst))
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def test_array(doc):
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"""std::array <-> list"""
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lst = m.cast_array()
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