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
| ## § push_back() [4/4] 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>
void nlohmann::basic_json::push_back | ( | std::initializer_list< basic_json > | init | ) |
| inline
  This function allows to use `push_back` with an initializer list. In case the current value is an object, the initializer list init contains only two elements, and the first element of init is a string, init is converted into an object element and added using push_back(const typename object_t::value_type&). Otherwise, init is converted to a JSON value and added using push_back(basic_json&&). Parameters
  init | an initializer list
  Complexity Linear in the size of the initializer list init. Note This function is required to resolve an ambiguous overload error, because pairs like `{"key", "value"}` can be both interpreted as `object_t::value_type` or `std::initializer_list<basic_json>`, see https://github.com/nlohmann/json/issues/235 for more information. Example The example shows how initializer lists are treated as objects when possible. 1 #include <json.hpp> 2 3 using json = nlohmann::json; 4 5 int main() 6 { 7 // create JSON values 8 json object = {{"one", 1}, {"two", 2}}; 9 json null; 10 11 // print values 12 std::cout << object << '\n'; 13 std::cout << null << '\n'; 14 15 // add values: 16 object.push_back({"three", 3}); // object is extended 17 object += {"four", 4}; // object is extended 18 null.push_back({"five", 5}); // null is converted to array 19 20 // print values 21 std::cout << object << '\n'; 22 std::cout << null << '\n'; 23 24 // would throw: 25 //object.push_back({1, 2, 3}); 26 } nlohmann::json basic_json<> json default JSON class Definition: json.hpp:12151 Output (play with this example online):
      {"one":1,"two":2}
      null
      {"four":4,"one":1,"three":3,"two":2}
      [["five",5]]
  The example code above can be translated with
      g++ -std=c++11 -Isrc doc/examples/push_back__initializer_list.cpp -o push_back__initializer_list
Definition at line 5007 of file json.hpp.