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

..

nlohmann

Hint the end when converting an object to a standard container

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