Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This version of Boost is under active development. The current version is 1.89.0.

Document Model

In this library the following types implement containers used to represent JSON data in memory:

Table 1. Container Types
Type	Description
`array`	A sequence container of JSON values supporting dynamic size and fast, random access. The interface and performance characteristics are similar to `std::vector`.
`object`	An associative container of key-value pairs with unique keys, where the key is a string and the mapped type is a JSON value. Search, insertion, and removal have average contant-time complexity. In addition, elements are stored contiguously in memory allowing cache-friendly iteration.
`string`	A contiguous range of characters. The library assumes that the contents of the string holds only valid UTF-8.
`value`	A special variant which can hold one of any of the six standard JSON data types.

These containers are explored in-depth in the sections that follow.

Sample code and identifiers used throughout are written as if the following declarations are in effect:

#include <boost/json.hpp> using namespace boost::json;