refactor(dosages): resolved clippy warnings

src/combo_graph.rs

@@ -62,7 +62,7 @@ impl ComboGraph {
             .map(|(pos, combo)| (max(self.target.abs_diff(*pos), 1), combo.weight(), pos))
             .min()?;
 
-        self.nodes.get(&closest.2)
+        self.nodes.get(closest.2)
     }
 
     /// Visit a combo and calculate its position and weight
@@ -110,8 +110,7 @@ impl ComboGraph {
         let combo = self.nodes.get(&self.target)?;
         Some(
             (0..self.values.len())
-                .map(|i| vec![self.values[i]; combo[i] as usize])
+                .flat_map(|i| vec![self.values[i]; combo[i] as usize])
-                .flatten()
                 .collect(),
         )
     }
@@ -120,8 +119,7 @@ impl ComboGraph {
         let combo = self.closest_node_target()?;
         Some(
             (0..self.values.len())
-                .map(|i| vec![self.values[i]; combo[i] as usize])
+                .flat_map(|i| vec![self.values[i]; combo[i] as usize])
-                .flatten()
                 .collect(),
         )
     }

src/factor.rs

@@ -12,7 +12,7 @@ fn gcf(mut a: u32, mut b: u32) -> u32 {
 }
 
 /// Calculate gcf of vector
-fn gcfv(v: &Vec<u32>) -> u32 {
+fn gcfv(v: &[u32]) -> u32 {
     let mut i = 1;
     let mut cgcf = v[0]; // start with first item
     let mut a;
@@ -33,13 +33,13 @@ fn gcfv(v: &Vec<u32>) -> u32 {
     cgcf
 }
 
-pub fn factorise(strengths: &mut Vec<u32>) -> u32 {
+pub fn factorise(strengths: &mut [u32]) -> u32 {
     let factor = gcfv(strengths);
     if factor == 1 {
         return factor;
     }
     for s in strengths.iter_mut() {
-        *s = *s / factor;
+        *s /= factor;
     }
     factor
 }

src/lib.rs

@@ -16,7 +16,7 @@ use crate::factor::factorise;
 /// ```
 ///
 pub fn calculate_combo(mut target: u32, mut strengths: Vec<u32>) -> Vec<u32> {
-    if strengths.len() == 0 {
+    if strengths.is_empty() {
         return vec![];
     }
 
@@ -24,7 +24,7 @@ pub fn calculate_combo(mut target: u32, mut strengths: Vec<u32>) -> Vec<u32> {
     let mut rounded = false;
 
     if factor != 1 {
-        if target % factor != 0 {
+        if target.is_multiple_of(factor) {
             let f_target: f64 = target as f64 / factor as f64;
             target = f_target.round() as u32;
             rounded = true;