From f7cc1b2549bfd8af25990d111ba8cbbc64c914fd Mon Sep 17 00:00:00 2001
From: carrotflakes <carrotflakes@gmail.com>
Date: Fri, 1 Sep 2023 21:56:22 +0900
Subject: [PATCH] Remove warnings

---
 src/functions/select.rs | 2 +-
 src/optimizers/fixed.rs | 2 +-
 src/optimizers/sgd.rs   | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/functions/select.rs b/src/functions/select.rs
index c8364f8..d2796a9 100644
--- a/src/functions/select.rs
+++ b/src/functions/select.rs
@@ -13,7 +13,7 @@ pub fn select(axis: usize, indices: Vec<usize>, x: &ComputedNDA) -> ComputedNDA
         false,
         "select",
         move |xs, ys, gys| {
-            drop(ys);
+            let _ = ys;
             let mut gx = NDArray::zeros(xs[0].shape());
             for i in 0..indices.len() {
                 gx.index_axis_mut(Axis(axis), indices[i])
diff --git a/src/optimizers/fixed.rs b/src/optimizers/fixed.rs
index 2630831..c071693 100644
--- a/src/optimizers/fixed.rs
+++ b/src/optimizers/fixed.rs
@@ -13,7 +13,7 @@ impl<T: Send + Sync + 'static> Optimizer<T> for Fixed {
     type State = ();
 
     fn new_state(&self, shape: &[usize]) -> Self::State {
-        drop(shape);
+        let _ = shape;
         ()
     }
 
diff --git a/src/optimizers/sgd.rs b/src/optimizers/sgd.rs
index a6fc53f..64d75c6 100644
--- a/src/optimizers/sgd.rs
+++ b/src/optimizers/sgd.rs
@@ -17,12 +17,12 @@ impl Optimizer<NDArray> for SGD {
     type State = ();
 
     fn new_state(&self, shape: &[usize]) -> Self::State {
-        drop(shape);
+        let _ = shape;
         ()
     }
 
     fn update(&mut self, data: &mut NDArray, state: &mut Self::State, grad: &NDArray) {
-        drop(state);
+        let _ = state;
         *data = &*data + grad.mul(scalar(-self.learning_rate));
     }
 }