JSON for Modern C++  3.5.0

◆ cbegin()

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>
const_iterator nlohmann::basic_json::cbegin ( ) 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 online):^^
1
^^ The example code above can be translated with
g++ -std=c++11 -Isingle_include 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 16426 of file json.hpp.