[#nlohmann-adl_serializer-from_json-01]
= xref:nlohmann.adoc[nlohmann]::xref:nlohmann/adl_serializer.adoc[adl_serializer]::from_json
:relfileprefix: ../../
:mrdocs:

convert a JSON value to any value type

== Synopses

Declared in `<nlohmann/adl_serializer.hpp>`

convert a JSON value to any value type


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename BasicJsonType,
    typename TargetType = ValueType>
static
decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
xref:nlohmann/adl_serializer/from_json-05.adoc[from_json](BasicJsonType&& j) noexcept(/* see-below */);
----

[.small]#xref:nlohmann/adl_serializer/from_json-05.adoc[_» more..._]#

convert a JSON value to any value type


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename BasicJsonType,
    typename TargetType = ValueType>
static
decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
xref:nlohmann/adl_serializer/from_json-06.adoc[from_json](
    BasicJsonType&& j,
    TargetType& val) noexcept(/* see-below */);
----

[.small]#xref:nlohmann/adl_serializer/from_json-06.adoc[_» more..._]#

== Return Value

* the JSON value converted to _TargetType_
* nothing; the result is written to _val_

== Parameters

[cols="1,4"]
|===
| Name| Description
| *j*
| JSON value to read from
| *val*
| value to write the converted result to
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#