nlohmann::basic_json::value

access specified object element via JSON Pointer with default value

Synopsis

Declared in <nlohmann/json.hpp>

template<class ValueType>
requires detail::is_getable<basic_json_t, ValueType>::value
                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value
ValueType
value(
    json_pointer const& ptr,
    ValueType const& default_value) const;

Return Value

value at ptr if found, otherwise default_value

Parameters

NameDescription
ptrJSON pointer to the element to access
default_valuevalue to return if ptr does not resolve to a value