template<template< typename U, typename V, typename... Args > class ObjectType = std::map, template< typename U, typename... Args > class ArrayType = std::vector, class StringType = std::string, class BooleanType = bool, class NumberIntegerType = std::int64_t, class NumberUnsignedType = std::uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator>
This enumeration collects the different JSON types. It is internally used to distinguish the stored values, and the functions is_null(), is_object(), is_array(), is_string(), is_boolean(), is_number() (with is_number_integer(), is_number_unsigned(), and is_number_float()), is_discarded(), is_primitive(), and is_structured() rely on it.
- Note
- There are three enumeration entries (number_integer, number_unsigned, and number_float), because the library distinguishes these three types for numbers: number_unsigned_t is used for unsigned integers, number_integer_t is used for signed integers, and number_float_t is used for floating-point numbers or to approximate integers which do not fit in the limits of their respective type.
- See also
- basic_json(const value_t value_type) – create a JSON value with the default value for a given type
- Since
- version 1.0.0
Enumerator |
---|
null | null value
|
object | object (unordered set of name/value pairs)
|
array | array (ordered collection of values)
|
string | string value
|
boolean | boolean value
|
number_integer | number value (signed integer)
|
number_unsigned | number value (unsigned integer)
|
number_float | number value (floating-point)
|
discarded | discarded by the the parser callback function
|
Definition at line 752 of file json.hpp.