Struct KeyBuilder

pub struct KeyBuilder { /* private fields */ }

Builder to create keys based on several other keys. For instance, we have a structure:

struct MyStruct(u8, String, u32, Box<f64>);

and we want to store this structure inside Art tree. This structure can identified by first 2 fields: (u8, String). We can create compound key based on them and use it as tree key.

use art_tree::Art;
use art_tree::KeyBuilder;
use art_tree::ByteString;

struct MyStruct(u8, String, u32, Box<f64>);

let mut art = Art::new();
let key = KeyBuilder::new().append(1).append(ByteString::new("abc".to_string().as_bytes())).build();
let val = MyStruct(1, "abc".to_string(), 200, Box::new(0.1));
assert!(art.insert(key.clone(), val));
assert!(art.get(&key).is_some());

Implementations

impl KeyBuilder

pub fn new() -> Self

pub fn with_capacity(cap: usize) -> Self

pub fn append(self, key_part: impl Key) -> Self

pub fn build(self) -> ByteString

Trait Implementations

impl Default for KeyBuilder

fn default() -> Self

Returns the “default value” for a type.