template<template< typename, typename, typename... > class ObjectType = std::map, template< typename, typename... > 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 > class AllocatorType = std::allocator, template< typename, typename=void > class JSONSerializer = adl_serializer>
Constructs a JSON array value by creating cnt copies of a passed value. In case cnt is 0
, an empty array is created.
- Parameters
-
[in] | cnt | the number of JSON copies of val to create |
[in] | val | the JSON value to copy |
- Postcondition
std::distance(begin(),end()) == cnt
holds.
- Complexity Linear in cnt.
- Exception safety Strong guarantee: if an exception is thrown, there are no
- changes to any JSON value.
- Example The following code shows examples for the
- basic_json(size_type, const basic_json&) constructor.
15 std::cout << array_0 <<
'\n';
16 std::cout << array_1 <<
'\n';
17 std::cout << array_5 <<
'\n';
basic_json<> json
default JSON class
ValueType value(const typename object_t::key_type &key, const ValueType &default_value) const
access specified object element with default value
Output (play with this example online):
[]
["Hello"]
["Hello","Hello","Hello","Hello","Hello"]
The example code above can be translated withg++ -std=c++11 -Isrc doc/examples/basic_json__size_type_basic_json.cpp -o basic_json__size_type_basic_json
- Since
- version 1.0.0
Definition at line 8687 of file json.hpp.