allocator_type
array
array_t
at
at
at
at
back
back
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
begin
begin
boolean_t
cbegin
cend
clear
const_pointer
const_reference
const_reverse_iterator
count
crbegin
crend
difference_type
dump
empty
end
end
erase
erase
erase
erase
find
find
front
front
get
get
get
get_allocator
get_ptr
get_ptr
get_ref
get_ref
insert
insert
insert
insert
insert
is_array
is_boolean
is_discarded
is_null
is_number
is_number_float
is_number_integer
is_object
is_primitive
is_string
is_structured
iterator_wrapper
iterator_wrapper
max_size
number_float_t
number_integer_t
object
object_t
operator value_t
operator ValueType
operator!=
operator!=
operator!=
operator+=
operator+=
operator+=
operator<
operator<
operator<<
operator<<
operator<=
operator=
operator==
operator==
operator==
operator>
operator>=
operator>>
operator>>
operator[]
operator[]
operator[]
operator[]
operator[]
operator[]
operator[]
operator[]
parse
parse
parse
parse_event_t
parser_callback_t
pointer
push_back
push_back
push_back
rbegin
rbegin
reference
rend
rend
reverse_iterator
size
size_type
string_t
swap
swap
swap
swap
type
value
value
value_t
value_type
~basic_json

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 = int64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator>

static basic_json nlohmann::basic_json::array | ( | std::initializer_list< basic_json > | init = `std::initializer_list<basic_json>()` | ) |

inlinestatic

Creates a JSON array value from a given initializer list. That is, given a list of values `a, b, c`, creates the JSON value `[a, b, c]`. If the initializer list is empty, the empty array `[]` is created.

Note
  This function is only needed to express two edge cases that cannot be realized with the initializer list constructor (basic_json(std::initializer_list<basic_json>, bool, value_t)). These cases are:
  1. creating an array whose elements are all pairs whose first element is a string – in this case, the initializer list constructor would create an object, taking the first elements as keys
  2. creating an empty array – passing the empty initializer list to the initializer list constructor yields an empty object

Parameters

  [in] | init | initializer list with JSON values to create an array from (optional)

Returns
  JSON array value

Complexity
  Linear in the size of init.

Example
  The following code shows an example for the array function.
  #include <json.hpp>
  using namespace nlohmann;
  int main()
  {
  // create JSON arrays
  json j_no_init_list = json::array();
  json j_empty_init_list = json::array({});
  json j_nonempty_init_list = json::array({1, 2, 3, 4});
  json j_list_of_pairs = json::array({ {"one", 1}, {"two", 2} });
  // serialize the JSON arrays
  std::cout << j_no_init_list << '\n';
  std::cout << j_empty_init_list << '\n';
  std::cout << j_nonempty_init_list << '\n';
  std::cout << j_list_of_pairs << '\n';
  }
  nlohmann::basic_json::array
  static basic_json array(std::initializer_list< basic_json > init=std::initializer_list< basic_json >())
  explicitly create an array from an initializer list
  Definition: json.hpp:1479
  nlohmann::basic_json
  a class to store JSON values
  Definition: json.hpp:191
  nlohmann
  namespace for Niels Lohmann
  Definition: json.hpp:88
  Output (play with this example online):

      []
      []
      [1,2,3,4]
      [["one",1],["two",2]]

  The example code above can be translated with

      g++ -std=c++11 -Isrc doc/examples/array.cpp -o array

See also
  basic_json(std::initializer_list<basic_json>, bool, value_t) – create a JSON value from an initializer list
  object(std::initializer_list<basic_json>) – create a JSON object value from an initializer list

Since
  version 1.0.0

Definition at line 1479 of file json.hpp.