JSON for Modern C++ 2.0.10

allocator_type
array
array_t
at
at
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
basic_json
basic_json
begin
begin
boolean_t
cbegin
cend
clear
const_iterator
const_pointer
const_reference
const_reverse_iterator
count
crbegin
crend
diff
difference_type
dump
emplace
emplace_back
empty
end
end
erase
erase
erase
erase
find
find
flatten
from_cbor
from_msgpack
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_number_unsigned
is_object
is_primitive
is_string
is_structured
iterator
iterator_wrapper
iterator_wrapper
max_size
number_float_t
number_integer_t
number_unsigned_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[]
operator[]
operator[]
operator[]
parse
parse
parse
parse
parse
parse
parse_event_t
parser_callback_t
patch
pointer
push_back
push_back
push_back
push_back
rbegin
rbegin
reference
rend
rend
reverse_iterator
size
size_type
string_t
swap
swap
swap
swap
to_cbor
to_msgpack
type
unflatten
value
value
value
value
value_t
value_type
~basic_json
| ## § array() 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>
static basic_json nlohmann::basic_json::array | ( | std::initializer_list< basic_json > | init = `std::initializer_list<basic_json>()` | ) |
| inline static
  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: 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 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. 1 #include <json.hpp> 2 3 using json = nlohmann::json; 4 5 int main() 6 { 7 // create JSON arrays 8 json j_no_init_list = json::array(); 9 json j_empty_init_list = json::array({}); 10 json j_nonempty_init_list = json::array({1, 2, 3, 4}); 11 json j_list_of_pairs = json::array({ {"one", 1}, {"two", 2} }); 12 13 // serialize the JSON arrays 14 std::cout << j_no_init_list << '\n'; 15 std::cout << j_empty_init_list << '\n'; 16 std::cout << j_nonempty_init_list << '\n'; 17 std::cout << j_list_of_pairs << '\n'; 18 } nlohmann::json basic_json<> json default JSON class Definition: json.hpp:12151 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:1723 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 1723 of file json.hpp.