fn extend<I: IntoIterator<Item = H256>>(&mut self, iter: I) {
        for i in iter {
            self.ingest(i).expect("!tree full");
        }
    }
/// Will panic if the tree fills
Will panic if the tree fills
Will panic if the tree fills
fn extend<I: IntoIterator<Item = H256>>(&mut self, iter: I) {
        for i in iter {
            self.ingest(i).expect("!tree full");
        }
    }
fn extend < I : IntoIterator < Item = H256 > > ( & mut self , iter : I ) { for i in iter { self . ingest ( i ) . expect ( " " ) ; } }
Will panic if the tree fills
Will panic if the tree fills
&mut self
iter
I
&mut self
iter
I