29cd970b94
* 🔥 consolidate documentation * ♻️ overwork std specializations * 🚚 move images files to mkdocs * ♻️ fix URLs * 🔧 tweak MkDocs configuration * 🔧 add namespaces * 📝 document deprecations * 📝 document documentation generation * 🚸 improve search * 🚸 add examples * 🚧 start adding documentation for macros * 📝 add note for https://github.com/nlohmann/json/issues/874#issuecomment-1001699139 * 📝 overwork example handling * 📝 fix Markdown tables
1.4 KiB
1.4 KiB
nlohmann::basic_json::value_t
enum class value_t : std::uint8_t {
null,
object,
array,
string,
boolean,
number_integer,
number_unsigned,
number_float,
binary,
discarded
};
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_binary, is_primitive, and
is_structured rely on it.
Notes
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.
Version history
- Added in version 1.0.0.
- Added unsigned integer type in version 2.0.0.
- Added binary type in version 3.8.0.