SelectQuad

qwt

Trait SelectQuad 

Source 
pub trait SelectQuad {
    // Required methods
    fn select(&self, symbol: u8, i: usize) -> Option<usize>;
    unsafe fn select_unchecked(&self, symbol: u8, i: usize) -> usize;
}
Expand description

A trait for the support of select query over the alphabet [0..3].

Required Methods§

Source

fn select(&self, symbol: u8, i: usize) -> Option<usize>

Returns the position in the indexed sequence of the i+1th occurrence of symbol (0-indexed, mening the first occurrence is obtained using i = 0).

Source

unsafe fn select_unchecked(&self, symbol: u8, i: usize) -> usize

Returns the position in the indexed sequence of the i+1th occurrence of symbol. We start counting from 0, so that select(symbol, 0) refers to the first occurrence of symbol.

§Safety

Calling this method if the ith occurrence of symbol does not exist or with a symbol larger than 3 is undefined behavior.

Implementors§