begin() [1/2]

template<template< typename U, typename V, typename... Args > class ObjectType = std::map, template< typename U, typename... Args > class ArrayType = std::vector, class StringType = std::string, class BooleanType = bool, class NumberIntegerType = std::int64_t, class NumberUnsignedType = std::uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator, template< typename T, typename SFINAE=void > class JSONSerializer = adl_serializer, class BinaryType = std::vector<std::uint8_t>>

const_iterator nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::begin ( ) const

inlinenoexcept

returns a const iterator to the first element

Returns a const iterator to the first element.

Illustration from cppreference.com

Returns

const iterator to the first element

@complexity Constant.

@requirement This function helps basic_json satisfying the Container requirements:

• The complexity is constant.
• Has the semantics of const_cast<const basic_json&>(*this).begin().

@liveexample{The following code shows an example for cbegin().,cbegin}

See also

see begin() – returns an iterator to the beginning

see end() – returns an iterator to the end

see cend() – returns a const iterator to the end

Since

version 1.0.0

Definition at line 22387 of file json.hpp.

    {
        return cbegin();
    }