pub struct AttrClass(_);
The AttrClass structure stores the type and operations for a particular type of attribute.
AttrClass
The functions in this structure should not be called directly. Instead, one should use the wrapper functions provided for Attribute.
Attribute
self
other
==
!=
TypeId
Returns the argument unchanged.
Calls U::from(self).
U::from(self)
That is, this conversion is whatever the implementation of From<T> for U chooses to do.
From<T> for U