It is a standard type of data interchange format. Several JavaScript applications which are server-based, like node.js, reactJS, etc., uses this file to store the configuration information.NoSQL databases like Elasticsearch and MongoDB use it to store unstructured data.Google+ saves profile data using JSON files.Mozilla Firefox uses JSON files to save bookmark backups.There are several popular websites or search engines that use JSON files. But now, JSON files are used for several other purposes. In early days, JSON files was used to transmit the data between server and web applications. Usually, JSON files are backup files, which is used to take backup of data that restored back to the application when needed. Void serialize( const map_size_t& map_size, Args&.A JSON refers to the JavaScript Object Notation format used to store simple objects and data structures. Void serialize( const arr_size_t& arr_size, Args&. Void serialize( const First& first, Rest&. variable sized serializer for any type template reserve internal buffer void reserve_buffer( const size_t size) I reccomend to use low cost but much better performance chip like ESP series. I considered to support them but I won't support them unless uClibc++ becomes much better compatibility to standard C++ library. STL library for Arduino Supportįor such boards, there are several STL libraries, like ArduinoSTL, StandardCPlusPlus, and so on.īut such libraries are mainly based on uClibc++ and it has many lack of function. Please see 'Memory Management' section and ArxContainer for detail. In addtion for such boards, type aliases for following types are different from others. These macros have no effect for STL enabled boards. # define MSGPACK_MAX_MAP_SIZE 8 // msgpack objects size in one packet # define MSGPACK_MAX_ARRAY_SIZE 8 // max size of MsgPack::map_t # define MSGPACK_MAX_PACKET_BYTE_SIZE 128 // max size of MsgPack::arr_t MsgPack::object::ext holds binary data of Ext type. This object is just a dummy and do nothing. MsgPack::object::nil_t is used to pack and unpack Nil type. Type Aliases for Str / Bin / Array / Mapįor general C++ apps (not Arduino), str_t is defined as: There are some additional types are defined to express msgpack formats easily. for the detail of arx::xxx, see ArxContainer.for Map, only MsgPack::map_t ( arx::map) can be used.for Array, only T, MsgPack::arr_t ( arx::vector), and MsgPack::fix_arr_t ( arx::array) can be used.all types of NIL, Bool, Integer, Float, Str, Bin.

for NO-STL Arduino, following types can be used.

C-style array and pointers are supported only packing.

unordered_xxx cannot be used in all Arduino.

T (need to serialize(ptr, size) or pack(ptr, size)).unsigned char (need to serialize(ptr, size) or pack(ptr, size)).unsigned char* (need to serialize(ptr, size) or pack(ptr, size)).std::string or String(Arduino) ( MsgPack::str_t).You can also pack() or unpack() variable one by one. These are the lists of types which can be serialize and deserialize. load current config MsgPack::eeprom::load(config) To pack / unpack values as such collections in a simple way, please use these functions. In msgpack, there are two collection types: Array and Map.Ĭ++ containers will be converted to one of them but you can do that from individual parameters. MsgPack:: arr_t v Encode / Decode to Collections without Container

MsgPack:: str_t s = 'str ' // std::string or String # include // input to msgpack int i = 123

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