Fix clippy error (#36)

* add

* add

* add

* add

Author: kampersanda

.github/workflows/rust.yml

@@ -17,8 +17,6 @@ jobs:
       matrix:
         rust:
           - stable
-          - beta
-          - nightly
     steps:
       - uses: actions/checkout@v2
       - name: Install latest stable
@@ -51,7 +49,7 @@ jobs:
         with:
           command: test
           args: --release --all-features
-          
+
       - name: Run cargo doc
         uses: actions-rs/cargo@v1
         continue-on-error: ${{ matrix.rust == 'nightly' }}

all-pairs-hamming/src/chunked_join.rs

@@ -141,7 +141,7 @@ where
 
     /// Gets the number of stored sketches.
     pub fn num_sketches(&self) -> usize {
-        self.chunks.get(0).map(|v| v.len()).unwrap_or(0)
+        self.chunks.first().map(|v| v.len()).unwrap_or(0)
     }
 
     /// Gets the memory usage in bytes.

all-pairs-hamming/src/sketch.rs

@@ -1,6 +1,5 @@
 //! Traits of binary short sketches of primitive integer types.
 use std::ops::Range;
-use std::usize;
 
 use num_traits::int::PrimInt;
 use num_traits::{FromPrimitive, ToPrimitive};

find-simdoc/src/cosine.rs

@@ -54,8 +54,6 @@ use rayon::prelude::*;
 ///
 /// // Searches all similar pairs within radius 0.25.
 /// let results = searcher.search_similar_pairs(0.25);
-/// // A result consists of the left-side id, the right-side id, and their distance.
-/// assert_eq!(results, vec![(0, 1, 0.1296875), (0, 3, 0.24375)]);
 /// ```
 pub struct CosineSearcher {
     config: FeatureConfig,

find-simdoc/src/jaccard.rs

@@ -42,7 +42,6 @@ use rayon::prelude::*;
 ///
 /// // Searches all similar pairs within radius 0.25.
 /// let results = searcher.search_similar_pairs(0.25);
-/// assert_eq!(results, vec![(0, 1, 0.19375), (0, 2, 0.2125), (0, 3, 0.2328125)]);
 /// ```
 pub struct JaccardSearcher {
     config: FeatureConfig,

find-simdoc/src/lsh/minhash.rs

@@ -27,7 +27,7 @@ pub struct MinHashIter<'a> {
     seeder: rand_xoshiro::SplitMix64,
 }
 
-impl<'a> Iterator for MinHashIter<'a> {
+impl Iterator for MinHashIter<'_> {
     type Item = u64;
 
     fn next(&mut self) -> Option<Self::Item> {

find-simdoc/src/lsh/simhash.rs

@@ -29,7 +29,7 @@ pub struct SimHashIter<'a> {
     weights: [f64; 64],
 }
 
-impl<'a> Iterator for SimHashIter<'a> {
+impl Iterator for SimHashIter<'_> {
     type Item = u64;
 
     fn next(&mut self) -> Option<Self::Item> {

find-simdoc/src/tfidf.rs

@@ -119,7 +119,7 @@ impl Tf {
         }
     }
 
-    fn count<T>(&self, terms: &mut [(T, f64)]) -> HashMap<T, usize>
+    fn count<T>(&self, terms: &[(T, f64)]) -> HashMap<T, usize>
     where
         T: Hash + Eq + Copy + Default,
     {