chore: Little clean ups of meilidb-core

meilidb-core/src/distinct_map.rs

@@ -1,5 +1,4 @@
 use std::hash::Hash;
-
 use hashbrown::HashMap;
 
 pub struct DistinctMap<K> {

meilidb-core/src/lib.rs

@@ -162,7 +162,7 @@ impl fmt::Debug for RawDocument {
 }
 
 fn raw_documents_from_matches(matches: SetBuf<(DocumentId, TmpMatch, Highlight)>) -> Vec<RawDocument> {
-    let mut docs_ranges = Vec::<(DocumentId, Range, Vec<Highlight>)>::new();
+    let mut docs_ranges: Vec<(_, Range, _)> = Vec::new();
     let mut matches2 = Matches::with_capacity(matches.len());
 
     for group in matches.linear_group_by(|(a, _, _), (b, _, _)| a == b) {

meilidb-core/src/query_builder.rs

@@ -229,7 +229,7 @@ impl<'c, S, FI> QueryBuilder<'c, S, FI>
     }
 
     pub fn add_searchable_attribute(&mut self, attribute: u16) {
-        let reorders = self.searchable_attrs.get_or_insert_with(Default::default);
+        let reorders = self.searchable_attrs.get_or_insert_with(ReorderedAttrs::new);
         reorders.insert_attribute(attribute);
     }
 }

meilidb-core/src/reordered_attrs.rs

@@ -5,6 +5,10 @@ pub struct ReorderedAttrs {
 }
 
 impl ReorderedAttrs {
+    pub fn new() -> ReorderedAttrs {
+        ReorderedAttrs { count: 0, reorders: Vec::new() }
+    }
+
     pub fn insert_attribute(&mut self, attribute: u16) {
         self.reorders.resize(attribute as usize + 1, None);
         self.reorders[attribute as usize] = Some(self.count as u16);