cpp 7 header-only 7 cpp20 5 single-file 5 cpp11 4 json 3 no-dependencies 3 parser 3 serializer 3 toml 3 toml-parser 3 toml-parsing 3 tomlplusplus 3 unicode 3 utf-8 3 sip-proxy 3 telephony 3 voip 3 cplusplus-20 3 cplusplus-17 3 configuration-files 3 c-plus-plus-20 3 c-plus-plus-17 3 c-plus-plus 2 cpp14 2 cpp23 2 mmapped 2 lmdbxx 2 lmdb 2 database 2 pegtl 2 peg 2 parsing-expression-grammars 2 parsing-expression-grammar 2 parsing 2 parser-combinators 2 grammar 2 doctest 2 tdd 2 testing 2 testing-framework 2 unit-testing 2