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authorSon Ho2022-02-08 13:58:57 +0100
committerSon Ho2022-02-08 13:58:57 +0100
commitc80141a9874345b71ee5e6c37947e1f0825698a7 (patch)
treea1ae43a474169d0b01cbdb8fa1187db2e17ccc81 /examples/misc
parent33261269a5264b416a0d8d87b9622345c40f2895 (diff)
Start adding more assumed types and functions
Diffstat (limited to '')
-rw-r--r--examples/misc/src/hashmap.rs18
1 files changed, 10 insertions, 8 deletions
diff --git a/examples/misc/src/hashmap.rs b/examples/misc/src/hashmap.rs
index e26ca582..721a859a 100644
--- a/examples/misc/src/hashmap.rs
+++ b/examples/misc/src/hashmap.rs
@@ -25,6 +25,7 @@ pub struct HashMap<T> {
/// The current number of values in the table
num_values: usize,
/// The max load factor, expressed as a fraction
+ /// TODO: use
max_load_factor: (usize, usize),
/// The table itself
slots: Vec<List<T>>,
@@ -89,14 +90,15 @@ impl<T> HashMap<T> {
pub fn insert(&mut self, key: Key, value: T) {
let hash = hash_key(&key);
let hash_mod = hash % self.slots.len();
- HashMap::insert_in_list(key, value, self.slots.get_mut(hash_mod).unwrap());
+ // We may want to use slots[...] instead of get_mut...
+ HashMap::insert_in_list(key, value, &mut self.slots[hash_mod]);
}
fn get_in_list<'l, 'k>(key: &'k Key, ls: &'l List<T>) -> Option<&'l T> {
match ls {
List::Nil => None,
List::Cons(ckey, cvalue, ls) => {
- if ckey == key {
+ if *ckey == *key {
Some(cvalue)
} else {
HashMap::get_in_list(key, ls)
@@ -111,14 +113,14 @@ impl<T> HashMap<T> {
pub fn get<'l, 'k>(&'l self, key: &'k Key) -> Option<&'l T> {
let hash = hash_key(key);
let hash_mod = hash % self.slots.len();
- HashMap::get_in_list(key, self.slots.get(hash_mod).unwrap())
+ HashMap::get_in_list(key, &self.slots[hash_mod])
}
fn get_mut_in_list<'l, 'k>(key: &'k Key, ls: &'l mut List<T>) -> Option<&'l mut T> {
match ls {
List::Nil => None,
List::Cons(ckey, cvalue, ls) => {
- if ckey == key {
+ if *ckey == *key {
Some(cvalue)
} else {
HashMap::get_mut_in_list(key, ls)
@@ -131,14 +133,14 @@ impl<T> HashMap<T> {
pub fn get_mut<'l, 'k>(&'l mut self, key: &'k Key) -> Option<&'l mut T> {
let hash = hash_key(key);
let hash_mod = hash % self.slots.len();
- HashMap::get_mut_in_list(key, self.slots.get_mut(hash_mod).unwrap())
+ HashMap::get_mut_in_list(key, &mut self.slots[hash_mod])
}
fn remove_from_list(key: &Key, ls: &mut List<T>) -> Option<T> {
match ls {
List::Nil => None,
- List::Cons(ckey, cvalue, tl) => {
- if ckey == key {
+ List::Cons(ckey, _, tl) => {
+ if *ckey == *key {
// We have to move under borrows, so we need to use
// [std::mem::replace] in several steps.
// Retrieve the tail
@@ -163,7 +165,7 @@ impl<T> HashMap<T> {
pub fn remove(&mut self, key: &Key) -> Option<T> {
let hash = hash_key(key);
let hash_mod = hash % self.slots.len();
- HashMap::remove_from_list(key, self.slots.get_mut(hash_mod).unwrap())
+ HashMap::remove_from_list(key, &mut self.slots[hash_mod])
}
}