Struct KeyData 

pub struct KeyData<K: Array + Ord, V: CodecFixed> {
    pub key: K,
    pub value: V,
    pub next_key: K,
}

Data about a key in an ordered database or an ordered database operation.

Fields

key: K

The key that exists in the database or in the database operation.

value: V

The value of key in the database or operation.

next_key: K

The next-key of key in the database or operation.

The next-key is the next active key that lexicographically follows it in the key space. If the key is the lexicographically-last active key, then next-key is the lexicographically-first of all active keys (in a DB with only one key, this means its next-key is itself)

Trait Implementations

impl<K: Clone + Array + Ord, V: Clone + CodecFixed> Clone for KeyData<K, V>

fn clone(&self) -> KeyData<K, V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<K: Debug + Array + Ord, V: Debug + CodecFixed> Debug for KeyData<K, V>

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

Formats the value using the given formatter.

impl<K: Hash + Array + Ord, V: Hash + CodecFixed> Hash for KeyData<K, V>

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<K: Ord + Array + Ord, V: Ord + CodecFixed> Ord for KeyData<K, V>

fn cmp(&self, other: &KeyData<K, V>) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl<K: PartialEq + Array + Ord, V: PartialEq + CodecFixed> PartialEq for KeyData<K, V>

fn eq(&self, other: &KeyData<K, V>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<K: PartialOrd + Array + Ord, V: PartialOrd + CodecFixed> PartialOrd for KeyData<K, V>

fn partial_cmp(&self, other: &KeyData<K, V>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl<K: Eq + Array + Ord, V: Eq + CodecFixed> Eq for KeyData<K, V>

impl<K: Array + Ord, V: CodecFixed> StructuralPartialEq for KeyData<K, V>