Niels Lohmann 80407e8316 Build diff operations member by member ...

diff() created every operation from an initializer list, so each
{"op", "replace"} pair became a temporary array with two heap strings
before it was turned into an object member; an operation took about 25
allocations. The operations are now built as objects whose members are
assigned one by one. Paths of members and elements are also built in
place, without a temporary string for each escaped key or array index.

diff() of canada.json, citm_catalog.json and twitter.json, with every
eighth scalar changed, is 1.3x to 1.6x as fast; the output is unchanged.

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

2026-10-16 19:38:23 +02:00

..

detail

Apply plain JSON Patch operations without building a json_pointer

2026-10-16 19:38:22 +02:00

thirdparty/hedley

Undefine the four JSON_HEDLEY_* macros that leak after including json.hpp (#5475)

2026-09-09 09:48:17 +02:00

adl_serializer.hpp

📄 adjust year (#5044)

2026-01-01 20:00:39 +01:00

byte_container_with_subtype.hpp

📄 adjust year (#5044)

2026-01-01 20:00:39 +01:00

json_fwd.hpp

Fix CI jobs that check less than they claim; move arm64 to GitHub (#5733)

2026-09-30 22:49:24 +02:00

json_literals.hpp

Move the user-defined string literals to <nlohmann/json_literals.hpp> and add JSON_NO_AUTOMATIC_UDLS (#5610)

2026-09-30 20:08:17 +02:00

json.hpp

Build diff operations member by member

2026-10-16 19:38:23 +02:00

ordered_map.hpp

Fix CI failures on develop from the API performance stack (#5860)

2026-10-16 19:16:21 +02:00