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◆ operator=()
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>
reference & nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::operator= |
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basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer > |
other | ) |
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inlinenoexcept |
Copy assignment operator. Copies a JSON value via the "copy and swap" strategy: It is expressed in terms of the copy constructor, destructor, and the swap() member function.
- Parameters
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[in] | other | value to copy from |
- Complexity\n Linear.
- Requirements\n This function helps
basic_json satisfying the - Container requirements:
- The complexity is linear.
- Example\n The code below shows and example for the copy assignment. It
- creates a copy of value
a which is then swapped with b . Finally, the copy of a (which is the null value after the swap) is destroyed.
15 std::cout << a << '\n';
16 std::cout << b << '\n';
static basic_json array(std::initializer_list< basic_json > init=std::initializer_list< basic_json >()) explicitly create an array from an initializer list
a class to store JSON values
basic_json<> json default JSON class
Output (play with this example online):
23
23
The example code above can be translated with g++ -std=c++11 -Isrc doc/examples/basic_json__copyassignment.cpp -o basic_json__copyassignment
- Since
- version 1.0.0
Definition at line 2542 of file json.hpp.
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