fn insert_all<I: IntoIterator<Item = Integer>>(&mut self, ns: I) {
        for n in ns {
            self.insert(n);
        }
    }
/// Add all of the `ns` to the set. Returns whether all items were absent
Add all of the `ns` to the set. Returns whether all items were absent
Add all of the ` ns ` to the set . Returns whether all items were absent
fn insert_all<I: IntoIterator<Item = Integer>>(&mut self, ns: I) {
        for n in ns {
            self.insert(n);
        }
    }
fn insert_all < I : IntoIterator < Item = Integer > > ( & mut self , ns : I ) { for n in ns { self . insert ( n ) ; } }
Add all of the `ns` to the set.
Add all of the ` ns ` to the set .
&mut self
ns
I
&mut self
ns
I