|
◆ clear()
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>
Clears the content of a JSON value and resets it to the default value as if basic_json(value_t) would have been called:
Value type | initial value |
null | null |
boolean | false |
string | "" |
number | 0 |
object | {} |
array | [] |
- Complexity\n Linear in the size of the JSON value.
- Example\n The example below shows the effect of
clear() to different - JSON types.
26 std::cout << j_null << '\n';
static basic_json array(std::initializer_list< basic_json > init=std::initializer_list< basic_json >()) explicitly create an array from an initializer list
void clear() noexcept clears the contents
a class to store JSON values
basic_json<> json default JSON class
Output (play with this example online):
null
false
0
0.0
{}
[]
""
The example code above can be translated with g++ -std=c++11 -Isrc doc/examples/clear.cpp -o clear
- Since
- version 1.0.0
Definition at line 5185 of file json.hpp.
|