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, template< typename T, typename SFINAE=void > class JSONSerializer = adl_serializer, class BinaryType = std::vector<std::uint8_t>>

static JSON_HEDLEY_WARN_UNUSED_RESULT basic_json nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::array ( initializer_list_t  init = {} )

inlinestatic

explicitly create an array from an initializer list

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(initializer_list_t, 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.

@exceptionsafety Strong guarantee: if an exception is thrown, there are no changes to any JSON value.

@liveexample{The following code shows an example for the array function.,array}

See also

see basic_json(initializer_list_t, bool, value_t) – create a JSON value from an initializer list

see object(initializer_list_t) – create a JSON object value from an initializer list

Since

version 1.0.0

Definition at line 19618 of file json.hpp.

                                                      {})
    {
        return basic_json(init, false, value_t::array);
    }