Function lastN [src]

Retrieve the n-th last byte

Prototype

pub fn lastN(self: CircularBuffer, dist: usize) !u8

Parameters

self: CircularBufferdist: usize

Source

  pub fn lastN(self: CircularBuffer, dist: usize) !u8 {
    if (dist > self.dict_size or dist > self.len) {
        return error.CorruptInput;
    }

    const offset = (self.dict_size + self.cursor - dist) % self.dict_size;
    return self.get(offset);
}  