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>
template<typename CompatibleNumberIntegerType , typename std::enable_if< std::is_constructible< number_integer_t, CompatibleNumberIntegerType >::value andstd::numeric_limits< CompatibleNumberIntegerType >::is_integer, CompatibleNumberIntegerType >::type = 0>
Create an integer number JSON value with a given content. This constructor allows any type that can be used to construct values of type number_integer_t. Examples may include the types int
, int32_t
, or short
.
- Template Parameters
-
CompatibleNumberIntegerType | an integer type which is compatible to number_integer_t. |
- Parameters
-
[in] | val | an integer to create a JSON number from |
- Complexity
- Constant.
- Example
- The example below shows the construction of several JSON integer number values from compatible types.
11 int_least32_t n17 = 17;
22 std::cout << j42 <<
'\n';
23 std::cout << j23 <<
'\n';
24 std::cout << j1024 <<
'\n';
25 std::cout << j17 <<
'\n';
26 std::cout << j8 <<
'\n';
a class to store JSON values
namespace for Niels Lohmann
Output (play with this example online): 42
23
1024
17
8
The example code above can be translated withg++ -std=c++11 -Isrc doc/examples/basic_json__CompatibleIntegerNumberType.cpp -o basic_json__CompatibleIntegerNumberType
- See also
- basic_json(const number_integer_t) – create a number value (integer)
-
basic_json(const int) – create a number value (integer)
- Since
- version 1.0.0
Definition at line 1239 of file json.hpp.