cleaning

append_digit_primes/src/main.rs

@@ -1,5 +1,3 @@
-use std::collections::HashMap;
-
 #[derive(Debug)]
 struct Tree {
     value: u64,
@@ -35,20 +33,9 @@ impl Tree {
             }
             return;
         }
-        // let handles = Vec::new();
-        // let xs = Vec::new();
         for child in &mut self.children {
             child.step();
-
-            // handles.push(std::thread::spawn(|| {
-            //     self.children[i].step();
-            // }));
         }
-        /*
-        for handle in handles {
-            handle.join().unwrap();
-        }
-        */
     }
 
     fn longest_path(&self) -> Vec<u64> {
@@ -82,28 +69,8 @@ fn step(x: u64) -> Vec<u64> {
     return new_xs;
 }
 
-fn is_prime(x: u64, primes: &mut HashMap<u64, bool>) -> bool {
-    let is_prime = primes.get(&x);
-    match is_prime {
-        Some(val) => return *val,
-        None => {
-            let mut i = 2;
-            while i * i <= x {
-                if x % i == 0 {
-                    primes.insert(x, false);
-                    return false;
-                }
-                i += 1;
-            }
-            primes.insert(x, true);
-            return true;
-        },
-    }
-}
-
 fn main() {
     let mut tree = Tree::new(0, vec![2, 3, 5, 7]);
-    let mut primes: HashMap<u64, bool> = HashMap::new();
     for _ in 0..20 {
         tree.step();
         println!("{:?}", tree.longest_path());

append_digit_primes/target/debug/.fingerprint/append_digit_primes-f5bed6ed222039f8/output

@@ -1,4 +0,0 @@
-{"message":"unused variable: `primes`","code":{"code":"unused_variables","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":2601,"byte_end":2611,"line_start":106,"line_end":106,"column_start":9,"column_end":19,"is_primary":true,"text":[{"text":"    let mut primes: HashMap<u64, bool> = HashMap::new();","highlight_start":9,"highlight_end":19}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(unused_variables)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"if this is intentional, prefix it with an underscore","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":2601,"byte_end":2611,"line_start":106,"line_end":106,"column_start":9,"column_end":19,"is_primary":true,"text":[{"text":"    let mut primes: HashMap<u64, bool> = HashMap::new();","highlight_start":9,"highlight_end":19}],"label":null,"suggested_replacement":"_primes","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: unused variable: `primes`\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:106:9\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m106\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m    let mut primes: HashMap<u64, bool> = HashMap::new();\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^^^^^^^\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[33mhelp: if this is intentional, prefix it with an underscore: `_primes`\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(unused_variables)]` on by default\u001b[0m\n\n"}
-{"message":"variable does not need to be mutable","code":{"code":"unused_mut","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":2601,"byte_end":2611,"line_start":106,"line_end":106,"column_start":9,"column_end":19,"is_primary":true,"text":[{"text":"    let mut primes: HashMap<u64, bool> = HashMap::new();","highlight_start":9,"highlight_end":19}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(unused_mut)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"remove this `mut`","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":2601,"byte_end":2605,"line_start":106,"line_end":106,"column_start":9,"column_end":13,"is_primary":true,"text":[{"text":"    let mut primes: HashMap<u64, bool> = HashMap::new();","highlight_start":9,"highlight_end":13}],"label":null,"suggested_replacement":"","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: variable does not need to be mutable\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:106:9\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m106\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m    let mut primes: HashMap<u64, bool> = HashMap::new();\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m----\u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^^^\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12mhelp: remove this `mut`\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(unused_mut)]` on by default\u001b[0m\n\n"}
-{"message":"function is never used: `is_prime`","code":{"code":"dead_code","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":2056,"byte_end":2064,"line_start":85,"line_end":85,"column_start":4,"column_end":12,"is_primary":true,"text":[{"text":"fn is_prime(x: u64, primes: &mut HashMap<u64, bool>) -> bool {","highlight_start":4,"highlight_end":12}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(dead_code)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: function is never used: `is_prime`\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:85:4\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m85\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0mfn is_prime(x: u64, primes: &mut HashMap<u64, bool>) -> bool {\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^^^^^\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(dead_code)]` on by default\u001b[0m\n\n"}
-{"message":"3 warnings emitted","code":null,"level":"warning","spans":[],"children":[],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: 3 warnings emitted\u001b[0m\n\n"}