value::try_at_pointer
Access an element via JSON Pointer.
Synopsis
boost::system::result< value const & >
try_at_pointer(
string_view ptr) const noexcept; (1)
boost::system::result< value & >
try_at_pointer(
string_view ptr) noexcept; (2)Description
This function is used to access a (potentially nested) element of the value using a JSON Pointer string.
Complexity
Linear in the sizes of ptr and underlying array, object, or string.
Exception Safety
No-throw guarantee.
Return Value
boost::system::result<value&> containing either a reference to the element identified by ptr or a corresponding error_code.
Return Value
boost::system::result<value const&> containing either a reference to the element identified by ptr or a corresponding error_code.
Parameters
| Name | Description |
|---|---|
|
JSON Pointer string. |