style: include inefficient_to_string (#760)

Author: vil02

Cargo.toml

@@ -43,7 +43,6 @@ from_iter_instead_of_collect = { level = "allow", priority = 1 }
 if_not_else = { level = "allow", priority = 1 }
 implicit_clone = { level = "allow", priority = 1 }
 implicit_hasher = { level = "allow", priority = 1 }
-inefficient_to_string = { level = "allow", priority = 1 }
 items_after_statements = { level = "allow", priority = 1 }
 iter_without_into_iter = { level = "allow", priority = 1 }
 linkedlist = { level = "allow", priority = 1 }

src/ciphers/morse_code.rs

@@ -10,7 +10,7 @@ pub fn encode(message: &str) -> String {
         .chars()
         .map(|char| char.to_uppercase().to_string())
         .map(|letter| dictionary.get(letter.as_str()))
-        .map(|option| option.unwrap_or(&UNKNOWN_CHARACTER).to_string())
+        .map(|option| (*option.unwrap_or(&UNKNOWN_CHARACTER)).to_string())
         .collect::<Vec<String>>()
         .join(" ")
 }
@@ -89,10 +89,10 @@ fn _check_all_parts(string: &str) -> bool {
 }
 
 fn _decode_token(string: &str) -> String {
-    _morse_to_alphanumeric_dictionary()
+    (*_morse_to_alphanumeric_dictionary()
         .get(string)
-        .unwrap_or(&_UNKNOWN_MORSE_CHARACTER)
-        .to_string()
+        .unwrap_or(&_UNKNOWN_MORSE_CHARACTER))
+    .to_string()
 }
 
 fn _decode_part(string: &str) -> String {