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Use the with_*_t aliases in tests, examples, and docs

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Replace spelled-out basic_json<...> instantiations that only change one
or two template parameters with nlohmann::json::with_*_t (or
ordered_json::with_*_t when the object type is ordered_map). Types that
change all three number types chain with_integers_t and with_float_t.

The raw basic_json<...> spelling stays where the template parameter
list itself is the subject: the alias tests in unit-udt.cpp, explicit
instantiations, and the ordered_json/compile-time docs.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann committed 2026-10-08 08:43:38 +02:00
1 parent ed8ba0201f
commit f57118889f
19 files changed
+47 -123
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tests/src/unit-regression1.cpp
+6 -8
View File
@@ -39,7 +39,7 @@ using nlohmann::json;
template<class K, class V, class dummy_compare, class A>
using my_workaround_fifo_map = nlohmann::fifo_map<K, V, nlohmann::fifo_map_compare<K>, A>;
using my_json = nlohmann::basic_json<my_workaround_fifo_map>;
using my_json = nlohmann::json::with_object_t<my_workaround_fifo_map>;
/////////////////////////////////////////////////////////////////////
// for #977
@@ -86,8 +86,7 @@ struct foo_serializer < T, typename std::enable_if < !std::is_same<foo, T>::valu
};
} // namespace ns
using foo_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t,
std::uint64_t, double, std::allocator, ns::foo_serializer, std::vector<std::uint8_t>>;
using foo_json = nlohmann::json::with_json_serializer_t<ns::foo_serializer>;
/////////////////////////////////////////////////////////////////////
// for #805
@@ -254,7 +253,7 @@ TEST_CASE("regression tests 1")
{
// create JSON class with nonstandard integer number type
using custom_json =
nlohmann::basic_json<std::map, std::vector, std::string, bool, int32_t, uint32_t, float>;
nlohmann::json::with_integers_t<std::int32_t, std::uint32_t>::with_float_t<float>;
custom_json j;
j["int_1"] = 1;
CHECK(j["int_1"] == 1);
@@ -470,18 +469,17 @@ TEST_CASE("regression tests 1")
// create JSON class with nonstandard float number type
// float
nlohmann::basic_json<std::map, std::vector, std::string, bool, int32_t, uint32_t, float> const j_float =
nlohmann::json::with_integers_t<std::int32_t, std::uint32_t>::with_float_t<float> const j_float =
1.23e25f;
CHECK(j_float.get<float>() == 1.23e25f);
// double
nlohmann::basic_json<std::map, std::vector, std::string, bool, int64_t, uint64_t, double> const j_double =
nlohmann::json const j_double =
1.23e35;
CHECK(j_double.get<double>() == 1.23e35);
// long double
nlohmann::basic_json<std::map, std::vector, std::string, bool, int64_t, uint64_t, long double>
const j_long_double = 1.23e45L;
nlohmann::json::with_float_t<long double> const j_long_double = 1.23e45L;
CHECK(j_long_double.get<long double>() == 1.23e45L);
}