Niels Lohmann cc2dae641d Move elements when converting rvalue containers to JSON ...

Add to_json overloads for rvalue array-like and object-like containers
that build the array/object from move iterators, so that
json j = std::move(vec) moves the elements instead of copying them.
std::vector<std::string> (100k x 40 chars): 4.7 ms -> 2.3 ms;
std::map<std::string, std::string>: -18 % (keys are const and still copied).

array_t/object_t, std::vector<bool>, std::filesystem::path and
std::u8string keep their dedicated overloads. Lvalues and const rvalues
are copied as before.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

2026-10-14 22:25:04 +02:00

..

conversions

Move elements when converting rvalue containers to JSON

2026-10-14 22:25:04 +02:00

input

Write doubles with the shortest digits (Żmij), digits in registers (#5634)

2026-10-14 17:38:37 +02:00

iterators

Use and extend the detail helpers to remove duplicated code (#5783)

2026-10-11 08:21:13 +02:00

meta

Restore v3.12.0 support for custom object key types (#5795)

2026-10-11 08:24:31 +02:00

output

Write doubles with the shortest digits (Żmij), digits in registers (#5634)

2026-10-14 17:38:37 +02:00

abi_macros.hpp

Store maps with enum keys as objects (opt-in) (#5600)

2026-10-04 17:54:05 +02:00

bit_ops.hpp

Write doubles with the shortest digits (Żmij), digits in registers (#5634)

2026-10-14 17:38:37 +02:00

exceptions.hpp

Use and extend the detail helpers to remove duplicated code (#5783)

2026-10-11 08:21:13 +02:00

hash.hpp

Make std::hash<basic_json> consistent with operator== for numbers (#5772)

2026-10-07 19:18:51 +02:00

json_custom_base_class.hpp

Fix ADL leak of nlohmann::detail through basic_json's default base class (#5238)

2026-07-06 12:47:24 +02:00

json_pointer.hpp

Report one-character non-numeric array indices like longer ones (#5800)

2026-10-11 08:21:41 +02:00

json_ref.hpp

Copy a pair-shaped array value under JSON_BRACE_INIT_COPY_SEMANTICS (#5701)

2026-10-07 07:39:05 +02:00

macro_scope.hpp

Use and extend the detail helpers to remove duplicated code (#5783)

2026-10-11 08:21:13 +02:00

macro_unscope.hpp

Write doubles with the shortest digits (Żmij), digits in registers (#5634)

2026-10-14 17:38:37 +02:00

recursion_depth_limit.hpp

Share one nesting depth limit between all bounded descents (#5637)

2026-09-30 20:06:43 +02:00

string_concat.hpp

Deduplicate basic_json internals; make insert(pos, json&&) move (#5727)

2026-10-04 11:57:41 +02:00

string_escape.hpp

Fix lint debt: enum-macro NOLINTs, doctest as SYSTEM, no-op analyzer (#5737)

2026-10-01 07:37:47 +02:00

string_utils.hpp

Make UTF8_ACCEPT/UTF8_REJECT inline variables to avoid TU-local exposure in modules (#5797)

2026-10-09 23:38:42 +02:00

value_t.hpp

Compare integers with floats exactly instead of widening the integer (#5459)

2026-09-05 09:43:07 +02:00