Fix warnings and spurious import (causing the code compiling only on …

…linux).

src/nested/map/mom/impls/zvec.rs

@@ -1,4 +1,3 @@
-use std::os::linux::raw::stat;
 use std::{iter::Map, slice::Iter, vec::IntoIter};
 
 use super::super::{
@@ -205,7 +204,8 @@ where
     Self { depth, entries }
   }
 
-  fn merge<'s, L, R, S, O, M>(lhs: L, rhs: R, split: S, op: O, merge: M) -> Self
+  ///! WARNING: No yet implemented!
+  fn merge<'s, L, R, S, O, M>(_lhs: L, _rhs: R, _split: S, _op: O, _merge: M) -> Self
   where
     L: Mom<'s, ZUniqHType = Z, ValueType = V>,
     R: Mom<'s, ZUniqHType = Z, ValueType = V>,
@@ -233,7 +233,7 @@ where
       ),
     >,
   {
-    struct DHZV<ZZ, VV> {
+    /*struct DHZV<ZZ, VV> {
       d: u8,
       h: ZZ,
       z: ZZ,
@@ -247,7 +247,7 @@ where
     let mut it_left = lhs.owned_entries();
     let mut it_right = rhs.owned_entries();
     let mut left = it_left.next().map(zv_to_dhzv);
-    let mut right = it_right.next().map(zv_to_dhzv);
+    let mut right = it_right.next().map(zv_to_dhzv);*/
     todo!()
   }
 }

src/nested/map/mom/mod.rs

@@ -8,8 +8,8 @@ use std::{
   cmp::Ordering,
   fmt::{Debug, Display},
   mem,
+  ops::AddAssign,
 };
-use std::ops::AddAssign;
 
 use num::PrimInt;
 

src/nested/map/skymap.rs

@@ -218,7 +218,7 @@ impl<'a, H: HHash, V: SkyMapValue + 'a> ImplicitSkyMapArrayRef<'a, H, V> {
   pub fn new(depth: u8, values: &'a [V]) -> Self {
     assert_eq!(
       n_hash(depth) as usize,
-      values.deref().len(),
+      values.len(),
       "Wrong implicit skymap size. Epecgted: {}. Actual: {}.",
       n_hash(depth),
       values.len()
@@ -250,11 +250,11 @@ impl<'a, H: HHash, V: SkyMapValue + Clone + 'a> SkyMap<'a> for ImplicitSkyMapArr
   }
 
   fn get(&self, hash: Self::HashType) -> &Self::ValueType {
-    &self.values.deref()[hash.as_()]
+    &self.values[hash.as_()]
   }
 
   fn values(&'a self) -> Self::ValuesIt {
-    self.values.deref().iter()
+    self.values.iter()
   }
 
   fn entries(&'a self) -> Self::EntriesIt {