Niels Lohmann 13d2b3e224 Return the first member of duplicate keys from lookups again ...

Looking up the last member of a duplicate key cannot stop at a match, so
every lookup scanned the whole object (1.6 to 3.4 times slower for small
objects). operator[](key), at, find, value, contains, count, and JSON
pointer resolution return the first member again, as yyjson and simdjson
do; materialize() and get<map>() keep the last value, as parse().

The documentation says so in the feature page and on each lookup page,
and explains how to get the value parse() would give. The integer index
templates and the discarded chaining of operator[] stay.

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

2026-10-09 23:20:51 +02:00

..

nlohmann

Return the first member of duplicate keys from lookups again

2026-10-09 23:20:51 +02:00