Trait frame_support::storage::PrefixIteratorOnRemoval

pub trait PrefixIteratorOnRemoval {
    // Required method
    fn on_removal(key: &[u8], value: &[u8]);
}

Trait for specialising on removal logic of PrefixIterator.

Required Methods

fn on_removal(key: &[u8], value: &[u8])

This function is called whenever a key/value is removed.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl PrefixIteratorOnRemoval for ()

No-op implementation.

fn on_removal(_key: &[u8], _value: &[u8])

Implementors