json/doc
Florian Albrechtskirchinger 5352856f04
Implement support for string_view (attempt no. 3) (#3423)
* Add key_compare member to ordered_map

* Replace == with key_compare in ordered_map

* Expose the actual comparison function used by object_t

nlohmann::ordered_map uses a different comparison function than the one
provided via template parameter.
* Introduce a type trait to detect if object_t has a key_compare member.
* Rename object_comparator_t to default_object_comparator_t.
* Add object_comparator_t to be conditionally defined as
  object_t::key_compare, if available, or default_object_comparator_t
  otherwise.
* Update the documentation accordingly.

Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>

* Add type traits to check if a type is usable as object key

Add type trait to check:
* if a type is a specialization of a template.
* if a type is a json_pointer.
* if a type is a basic_json::{const_,}iterator.
* if two types are comparable using a given comparison functor.
* if a type is comparable to basic_json::object_t::key_type.
* if a type has a member type is_transparent.
* if a type is usable as object key.
* if a type has an erase() function accepting a given KeyType.

Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>

* Rework basic_json element access to accept more key types

Rework basic_json element access member functions and operators to
accept any type that meets the requirements defined by type trait
detail::is_usable_as_key_type.

Member functions and operators:
* at()
* operator[]
* value()
* erase()
* find()
* count()
* contains()

Update documentation to reflect these changes.

Add unit tests to excercise the new functions using std::string_view.

Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>

Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>
2022-04-29 21:40:02 +02:00
..
docset 🔧 adjust docset generation script 2022-01-04 15:20:50 +01:00
examples Overwork documentation (#3444) 2022-04-25 22:40:45 +02:00
mkdocs Implement support for string_view (attempt no. 3) (#3423) 2022-04-29 21:40:02 +02:00
usages 📝 listing projects using the library 2017-02-08 19:16:38 +01:00
avatars.png 🔖 set version to 3.10.5 2022-01-02 22:35:35 +01:00
index.md 🔖 set version to 3.10.5 2022-01-02 22:35:35 +01:00
json.gif 🔖 set version to 3.10.5 2022-01-02 22:35:35 +01:00
Makefile Consolidate documentation (#3071) 2021-12-29 13:41:01 +01:00
README.md Consolidate documentation (#3071) 2021-12-29 13:41:01 +01:00

Documentation

Generate documentation

Note on documentation: The source files contain links to the online documentation at https://json.nlohmann.me. This URL contains the most recent documentation and should also be applicable to previous versions; documentation for deprecated functions is not removed, but marked deprecated.

If you want to see the documentation for a specific tag or commit hash, you can generate it as follows (here for tag v3.10.2):

git clone https://github.com/nlohmann/json.git
cd json
git checkout v3.10.2
make install_venv serve -C doc/mkdocs

Open URL http://127.0.0.1:8000/ in your browser. Replace from any URL from the source code https://json.nlohmann.me with http://127.0.0.1:8000 to see the documentation for your tag or commit hash.