Method read_fast

crates/vm/src/stdlib/_io.rs:1204–1208

(&mut self, n: usize)

        }

        fn read_fast(&mut self, n: usize) -> Option<Vec<u8>> {
            let ret = self.active_read_slice().get(..n)?.to_vec();
            self.pos += n as Offset;
            Some(ret)
        }

        fn read_generic(&mut self, n: usize, vm: &VirtualMachine) -> PyResult<Option<Vec<u8>>> {
            if let Some(fast) = self.read_fast(n) {