pub struct VarName(_);
symbol as a left value
Q: Why this does not return &str? A: const
&str
const
source
Hasher
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
String