JSON for Modern C++  3.0.1

◆ begin() [2/2]

template<template< typename, typename, typename... > class ObjectType = std::map, template< typename, typename... > 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 > class AllocatorType = std::allocator, template< typename, typename=void > class JSONSerializer = adl_serializer>
const_iterator nlohmann::basic_json::begin ( ) const
inlinenoexcept

Returns a const iterator to the first element.

range-begin-end.svg
Illustration from cppreference.com
Returns
const iterator to the first element
Complexity Constant.
Requirements This function helps basic_json satisfying the
Container requirements:
  • The complexity is constant.
  • Has the semantics of const_cast<const basic_json&>(*this).begin().
Example The following code shows an example for cbegin(). cbegin.cpp Output (play with this example cbegin.link): cbegin.output The example code above can be translated withg++ -std=c++11 -Isrc doc/examples/cbegin.cpp -o cbegin
See also
begin() – returns an iterator to the beginning
end() – returns an iterator to the end
cend() – returns a const iterator to the end
Since
version 1.0.0

Definition at line 11087 of file json.hpp.