Niels Lohmann 420e9218cd Hint the end when converting an object to a standard container ...

from_json for map-like containers called emplace() without a hint, which
searches the tree for every key. The keys of the source object are sorted, so
inserting with the end as the hint is constant time, as it was in 3.12.0 via
std::inserter. get<std::map<...>>() of a 25,000 entry object: 4.2 ms -> 3.25 ms
(3.12.0: 3.7 ms).

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

2026-10-15 11:46:01 +02:00

..

conversions

Hint the end when converting an object to a standard container

2026-10-15 11:46:01 +02:00

input

Look up the key only once in the callback parser's key()

2026-10-15 08:16:23 +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

Restore unflatten() speed after the linear-time rewrite

2026-10-15 10:52:34 +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

Speed up JSON pointer parsing, formatting, comparison and lookup

2026-10-15 08:19:58 +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