Fix clippy lints on previous years

Author: connorslade

aoc_2021/src/day_12.rs

@@ -76,11 +76,11 @@ struct ParseResult<'a> {
     end: NodeIndex,
 }
 
-fn parse(input: &str) -> ParseResult {
+fn parse(input: &str) -> ParseResult<'_> {
     let mut graph = UnGraph::new_undirected();
     let mut nodes = HashMap::new();
 
-    fn make_node(name: &str) -> Node {
+    fn make_node(name: &str) -> Node<'_> {
         Node {
             name,
             cave_type: if name == "start" || name == "end" {

aoc_2023/src/day_08.rs

@@ -73,7 +73,7 @@ impl<'a> Map<'a> {
     }
 }
 
-fn parse(input: &str) -> Map {
+fn parse(input: &str) -> Map<'_> {
     let (instructions, node_list) = input.split_once("\n\n").unwrap();
 
     let mut nodes = HashMap::new();

aoc_2023/src/day_19.rs

@@ -127,7 +127,7 @@ enum Rule<'a> {
     },
 }
 
-fn parse(input: &str) -> (HashMap<&str, Vec<Rule>>, Vec<[u32; 4]>) {
+fn parse(input: &str) -> (HashMap<&str, Vec<Rule<'_>>>, Vec<[u32; 4]>) {
     let mut rules_out = HashMap::new();
     let mut shapes = Vec::new();
 

aoc_2023/src/day_25.rs

@@ -26,7 +26,7 @@ struct Wires<'a> {
     wire: Graph<&'a str, (), Undirected>,
 }
 
-fn parse(input: &str) -> Wires {
+fn parse(input: &str) -> Wires<'_> {
     let mut nodes = HashMap::new();
     let mut wire = UnGraph::new_undirected();
 

aoc_2024/src/day_25.rs

@@ -32,7 +32,7 @@ fn part_a(input: &str) -> Answer {
     out.into()
 }
 
-fn part_b(input: &str) -> Answer {
+fn part_b(_input: &str) -> Answer {
     Answer::Unimplemented
 }