nlohmann::basic_json::contains

check the existence of an element in a JSON object given a JSON pointer

Synopsis

Declared in <nlohmann/json.hpp>

template<typename BasicJsonType>
requires detail::is_basic_json<BasicJsonType>::value
[[deprecated]]
bool
contains(nlohmann::json_pointer<BasicJsonType> const& ptr) const;

Warning

Deprecated: Since 3.11.0; use basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>. Use of this entity is allowed but discouraged.

Return Value

whether the JSON pointer resolves to an existing element

Parameters

Name

Description

ptr

JSON pointer to the element to check for

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