fix: address clippy complaints

src/lib.rs

@@ -33,6 +33,7 @@ impl<K: Serialize, V: Serialize> Serialize for DumbMap<K, V> {
 pub enum ArrayDifference {
     /// `source` and `target` are the same length, but some values of the same indices are different
     PairsOnly {
+        /// differing pairs that appear in the overlapping indices of `source` and `target`
         different_pairs: DumbMap<usize, Difference>,
     },
     /// `source` is shorter than `target`
@@ -105,9 +106,8 @@ pub fn arrays(
 
     let mut different_pairs = vec![];
     while let (Some(_), Some(_)) = (source_iter.peek(), target_iter.peek()) {
-        let ((i, source), target) = match (source_iter.next(), target_iter.next()) {
-            (Some(source), Some(target)) => (source, target),
-            _ => unreachable!("checked by peek()"),
+        let (Some((i, source)), Some(target)) = (source_iter.next(), target_iter.next()) else {
+            unreachable!("checked by peek()");
         };
         different_pairs.push(values(source, target).map(|diff| (i, diff)));
     }
@@ -135,11 +135,7 @@ pub fn arrays(
         });
     }
 
-    if let Some(different_pairs) = different_pairs {
-        Some(ArrayDifference::PairsOnly { different_pairs })
-    } else {
-        None
-    }
+    different_pairs.map(|different_pairs| ArrayDifference::PairsOnly { different_pairs })
 }
 
 #[must_use]

src/main.rs

@@ -1,5 +1,5 @@
 #![doc = include_str!("../README.md")]
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
 use clap::Parser;
 
@@ -22,20 +22,20 @@ enum Error {
     SerdeParse(PathBuf, serde_json::Error),
 }
 
-fn read_to_json(path: PathBuf) -> Result<serde_json::Map<String, serde_json::Value>, Error> {
+fn read_to_json(path: &Path) -> Result<serde_json::Map<String, serde_json::Value>, Error> {
     serde_json::from_str(
-        std::fs::read_to_string(&path)
-            .map_err(|err| Error::FileRead(path.clone(), err))?
+        std::fs::read_to_string(path)
+            .map_err(|err| Error::FileRead(path.to_path_buf(), err))?
             .as_str(),
     )
-    .map_err(|err| Error::SerdeParse(path.clone(), err))
+    .map_err(|err| Error::SerdeParse(path.to_path_buf(), err))
 }
 
 fn run() -> Result<Option<String>, Error> {
     let args = Args::parse();
 
-    let source_json = read_to_json(args.source_json)?;
-    let target_json = read_to_json(args.target_json)?;
+    let source_json = read_to_json(args.source_json.as_path())?;
+    let target_json = read_to_json(args.target_json.as_path())?;
 
     let possible_pretty_diff = serde_json_diff::objects(source_json, target_json)
         .map(|diff| serde_json::to_string_pretty(&diff))