Struct memtable_core::Position

pub struct Position {
    pub row: usize,
    pub col: usize,
}

Represents the position of a cell in a table

Fields

row: usize

Represents the row number of a cell starting from 0

col: usize

Represents the coumn number of a cell starting from 0

Implementations

impl Position

pub fn new(row: usize, col: usize) -> Self

Creates a new position with the given row and column

Trait Implementations

impl Clone for Position

fn clone(&self) -> Position

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Position

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Position

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Hash for Position

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for Position

fn cmp(&self, other: &Self) -> Ordering

Compares positions in terms of order by seeing if one comes before/after another in rows. If on the same row, then the columns are compared.

Examples

// Row is first used for comparisons
assert!(Position { row: 0, col: 1 } < Position { row: 1, col: 0 });
assert!(Position { row: 1, col: 0 } > Position { row: 0, col: 1 });

// Column is used for comparisons if rows are equal
assert!(Position { row: 0, col: 0 } < Position { row: 0, col: 1 });
assert!(Position { row: 0, col: 1 } > Position { row: 0, col: 0 });

// Row & column need to match for equality
assert_eq!(Position { row: 0, col: 0 }, Position { row: 0, col: 0 });

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Position> for Position

fn eq(&self, other: &Position) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Position) -> bool

This method tests for !=.

impl PartialOrd<Position> for Position

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

Compares positions in terms of order by seeing if one comes before/after another in rows. If on the same row, then the columns are compared.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Position

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl Copy for Position

impl Eq for Position

impl StructuralEq for Position

impl StructuralPartialEq for Position