Trait KeyComparator 

pub trait KeyComparator: Send + Sync {
    // Required method
    fn compare(&self, key1: &[u8], key2: &[u8]) -> Ordering;
}

Trait for custom key comparison.

Allows databases to use application-specific ordering rather than the default unsigned byte-by-byte comparison.

Required Methods

fn compare(&self, key1: &[u8], key2: &[u8]) -> Ordering

Compares two keys and returns their ordering.

Arguments

• key1 - First key to compare
• key2 - Second key to compare

Returns

Ordering::Less if key1 < key2, Ordering::Equal if equal, Ordering::Greater if key1 > key2

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl KeyComparator for DefaultComparator