Update lib for iterators

2022/src/bin/day08.rs

@@ -40,7 +40,7 @@ impl Visibility {
 impl Grid {
     fn new(text: &str) -> Self {
         let mut map = HashMap::new();
-        let lines = aoc::split_lines(text);
+        let lines: Vec<&str> = aoc::lines(text).collect();
 
         let rows = lines.len();
         let cols = lines[0].len();

2022/src/bin/day09.rs

@@ -43,10 +43,9 @@ struct Step {
 }
 
 fn parse_input(input: &str) -> Vec<Step> {
-    aoc::split_lines(input)
-        .iter()
+    aoc::lines(input)
         .map(|line| {
-            let words = aoc::split_words(line);
+            let words: Vec<&str> = aoc::words(line).collect();
 
             let d = Direction::from_str(words[0]).unwrap();
             let n = words[1].parse::<i64>().unwrap();

2022/src/bin/day10.rs

@@ -20,10 +20,9 @@ enum Instruction {
 }
 
 fn parse(input: &str) -> Vec<Instruction> {
-    aoc::split_lines(input)
-        .iter()
+    aoc::lines(input)
         .map(|line| {
-            let w = aoc::split_words(line);
+            let w: Vec<&str> = aoc::words(line).collect();
             match w[0] {
                 "noop" => Instruction::Noop,
                 "addx" => Instruction::Addx(w[1].parse().unwrap()),

2022/src/lib.rs

@@ -1,7 +1,13 @@
-pub fn split_lines(s: &str) -> Vec<&str> {
-    s.trim_end().split('\n').collect()
+use std::str::Split;
+
+pub fn lines(s: &str) -> Split<char> {
+    s.trim_end().split('\n')
 }
 
-pub fn split_words(s: &str) -> Vec<&str> {
-    s.split(' ').collect()
+pub fn words(s: &str) -> Split<char> {
+    s.split(' ')
+}
+
+pub fn blocks(s: &str) -> Split<&str> {
+    s.split("\n\n")
 }