/// Ensures a value is in the entry by inserting the default if empty, and returns
/// a mutable reference to the value in the entry.
///
Ensures a value is in the entry by inserting the default if empty, and returns
a mutable reference to the value in the entry.
Ensures a value is in the entry by inserting the default if empty and returns a mutable reference to the value in the entry .
pub fn or_insert(self, default: V) -> &'a mut V {
        match self {
            Occupied(entry) => entry.into_mut(),
            Vacant(entry) => entry.insert(default),
        }
    }
pub fn or_insert ( self , default : V ) -> & ' a mut V { match self { Occupied ( entry ) => entry . into_mut ( ) , Vacant ( entry ) => entry . insert ( default ) , } }
Ensures a value is in the entry by inserting the default if empty, and returns
a mutable reference to the value in the entry.
Ensures a value is in the entry by inserting the default if empty and returns a mutable reference to the value in the entry .
self
<not_specific>
default
V
<not_specific>