[#nlohmann-basic_json-00-value-0eb]
= xref:nlohmann.adoc[nlohmann]::xref:nlohmann/basic_json-00.adoc[basic_json]::value
:relfileprefix: ../../
:mrdocs:

access specified object element with default value

== Synopsis

Declared in `<nlohmann/json.hpp>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class ValueType>
requires !detail::is_transparent<object_comparator_t>::value
                   && detail::is_getable<basic_json_t, ValueType>::value
                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value
ValueType
value(
    object_t::key_type const& key,
    ValueType const& default_value) const;
----


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