Struct radix_trie::NibbleVec
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pub struct NibbleVec {
// some fields omitted
}A data-structure for storing a sequence of 4-bit values.
Values are stored in a Vec<u8>, with two values per byte.
Values at even indices are stored in the most-significant half of their byte, while values at odd indices are stored in the least-significant half.
Imagine a vector of MSB first bytes, and you'll be right.
n = [_ _ | _ _ | _ _]
Methods
impl NibbleVec
fn new() -> NibbleVec
Create an empty nibble vector.
fn from_byte_vec(vec: Vec<u8>) -> NibbleVec
Create a nibble vector from a vector of bytes.
Each byte is split into two 4-bit entries (MSB, LSB).
fn len(&self) -> usize
Get the number of elements stored in the vector.
fn get(&self, idx: usize) -> u8
Fetch a single entry from the vector.
Guaranteed to be a value in the interval [0, 15].
Panics if idx >= self.len().
fn push(&mut self, val: u8)
Add a single nibble to the vector.
Only the 4 least-significant bits of the value are used.
fn split(&mut self, idx: usize) -> NibbleVec
Split the vector into two parts.
All elements at or following the given index are returned in a new NibbleVec,
with exactly idx elements remaining in this vector.
Panics if idx > self.len().
fn join(self, other: &NibbleVec) -> NibbleVec
Append another nibble vector whilst consuming this vector.
Trait Implementations
impl Clone for NibbleVec
impl PartialEq<NibbleVec> for NibbleVec
fn eq(&self, other: &NibbleVec) -> bool
This method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, other: &Rhs) -> bool1.0.0
This method tests for !=.
impl Eq for NibbleVec
impl PartialEq<[u8]> for NibbleVec
Compare a NibbleVec and a slice of bytes element-by-element. Bytes are not interpreted as two NibbleVec entries.
fn eq(&self, other: &[u8]) -> bool
This method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, other: &Rhs) -> bool1.0.0
This method tests for !=.