Trait WriteCursor 

pub trait WriteCursor<'txn, T: Table>: ReadCursor<'txn, T> {
    // Required methods
    fn put(&mut self, key: &T::Key, value: &T::Value);
    fn append(&mut self, key: &T::Key, value: &T::Value);
    fn remove(&mut self);
}

A cursor is used for navigating the entries within a table. The read-write version can also delete entries.

Closely follows libmdbx’s cursor API.

Required Methods

fn put(&mut self, key: &T::Key, value: &T::Value)

Puts a new entry into the database. The cursor will be positioned on the new entry.

fn append(&mut self, key: &T::Key, value: &T::Value)

Appends a key/value pair to the end of the database. This operation fails if the key is less than the last key.

fn remove(&mut self)

Removes the current entry from the database. For a DupTable, this removes the current duplicate value.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<'txn, T: Table> WriteCursor<'txn, T> for MdbxWriteCursor<'txn, T>