deref syntax?

src/util/pattern.rs

@@ -8,7 +8,7 @@ use std::sync::RwLockWriteGuard;
 type ParseError = Box<dyn std::error::Error>;
 
 pub trait Pattern<'a> {
-    fn execute(&self, values: &'a mut RwLockWriteGuard<'_, [RawColor]>);
+    fn execute(&self, values: &'a mut RwLockWriteGuard<'_, [RawColor; crate::LED_SIZE]>);
     fn parse(args: Vec<String>) -> Result<Self, ParseError> where Self: Sized;
 }
 
@@ -25,7 +25,7 @@ impl<'a> TryFrom<Vec<String>> for Box<dyn Pattern<'a>> {
 
 struct Unit;
 impl<'a> Pattern<'a> for Unit {
-    fn execute(&self, values: &'a mut RwLockWriteGuard<'_, [RawColor]>) {}
+    fn execute(&self, values: &'a mut RwLockWriteGuard<'_, [RawColor; crate::LED_SIZE]>) {}
     fn parse(args: Vec<String>) -> Result<Self, ParseError> {
         Ok(Unit {})
     }
@@ -38,9 +38,10 @@ struct Value {
 }
 
 impl<'a> Pattern<'a> for Value {
-    fn execute(&self, values: &'a mut RwLockWriteGuard<'_, [RawColor]>) {
+    fn execute(&self, values: &'a mut RwLockWriteGuard<'_, [RawColor; crate::LED_SIZE]>) {
+        let mut v = *values;
         for i in 0..crate::LED_SIZE {
-            let color: RawColor = *values[i];
+            let mut color: RawColor = v[i];
             if self.r.is_some() {
                 color[0] = self.r.unwrap();   
             }
@@ -50,8 +51,9 @@ impl<'a> Pattern<'a> for Value {
             if self.b.is_some() {
                 color[0] = self.b.unwrap();   
             }
-            *values[i] = color;
+            v[i] = color;
         }
+        *values = v;
     }
     fn parse(args: Vec<String>) -> Result<Self, ParseError> {
         let param1 = args[1].parse::<u8>();
@@ -95,7 +97,7 @@ impl<'a> Pattern<'a> for Value {
     }
 }
 
-pub fn parse_line(v: Vec<String>) -> Result<Box<dyn Pattern<'static>>, ParseError> {
+pub fn parse_line(v: Vec<String>) -> Result<Box<dyn Pattern<'_>>, ParseError> {
     let res: Result<Box<dyn Pattern>, ParseError> = v.try_into();
     res
 }