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use std::collections::BTreeMap;
pub trait BDictAccess<'a, V> {
fn to_list(&self) -> Vec<(&'a [u8], &V)>;
fn lookup(&self, key: &[u8]) -> Option<&V>;
fn lookup_mut(&mut self, key: &[u8]) -> Option<&mut V>;
fn insert(&mut self, key: &'a [u8], value: V) -> Option<V>;
fn remove(&mut self, key: &[u8]) -> Option<V>;
}
impl<'a, V> BDictAccess<'a, V> for BTreeMap<&'a [u8], V> {
fn to_list(&self) -> Vec<(&'a [u8], &V)> {
self.iter().map(|(k, v)| (*k, v)).collect()
}
fn lookup(&self, key: &[u8]) -> Option<&V> {
self.get(key)
}
fn lookup_mut(&mut self, key: &[u8]) -> Option<&mut V> {
self.get_mut(key)
}
fn insert(&mut self, key: &'a [u8], value: V) -> Option<V> {
self.insert(key, value)
}
fn remove(&mut self, key: &[u8]) -> Option<V> {
self.remove(key)
}
}