![]() |
Home | Libraries | People | FAQ | More |
Access an element, with bounds checking.
boost::system::result
<value
& > try_at(string_view
key) noexcept;
Returns boost::system::result
containing a reference to the
element of the underlying object, if pos
is within its range. If pos
is outside of that range, or the underlying value is not an object the
result contains an error_code
.
No-throw guarantee.
Name |
Description |
---|---|
|
The key of the element to find. |
Constant.