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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>
Creates a copy of a given JSON value.
- Parameters
-
[in] | other | the JSON value to copy |
- Complexity
- Linear in the size of other.
- Requirements
- This function satisfies the Container requirements:
- The complexity is linear.
- As postcondition, it holds:
other == basic_json(other) .
- Exceptions
-
std::bad_alloc | if allocation for object, array, or string fails. |
- Example
- The following code shows an example for the copy constructor.
8 json j1 = { "one", "two", 3, 4.5, false}; 14 std::cout << j1 << " = " << j2 << '\n'; 15 std::cout << std::boolalpha << (j1 == j2) << '\n'; a class to store JSON values
namespace for Niels Lohmann
Output (play with this example online): ["one","two",3,4.5,false] = ["one","two",3,4.5,false]
true
The example code above can be translated withg++ -std=c++11 -Isrc doc/examples/basic_json__basic_json.cpp -o basic_json__basic_json
- Since
- version 1.0.0
Definition at line 1692 of file json.hpp.
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