refactor

Author: donno2048

src/tools/tidy/src/style.rs

@@ -70,29 +70,32 @@ fn generate_problems<'a>(
 consts:&'a[u32],
 letter_digit:&'aHashMap<char,char>,
 ) -> implIterator<Item = u32> + 'a{
- consts.into_iter().flat_map(move |const_value| {
-letmutproblem =format!("{:X}", const_value);
-for(key, value)in letter_digit{
-problem = problem.replace(&value.to_string(),&key.to_string());
-}
+ consts.iter().flat_map(move |const_value| {
+let problem =
+ letter_digit.iter().fold(format!("{:X}", const_value), |acc,(key, value)|{
+ acc.replace(&value.to_string(),&key.to_string())
+});
 let indexes:Vec<usize> = problem
 .chars()
 .enumerate()
 .filter_map(|(index, c)| if letter_digit.contains_key(&c){Some(index)}else{None})
 .collect();
 (0..1 << indexes.len()).map(move |i| {
-let result = problem
-.chars()
-.enumerate()
-.map(|(index, c)| {
-ifletSome(pos) = indexes.iter().position(|&x| x == index){
-if(i >> pos)&1 == 1{ letter_digit[&c]}else{ c }
-}else{
- c
-}
-})
-.collect::<String>();
- u32::from_str_radix(&result,0x10).unwrap()
+ u32::from_str_radix(
+&problem
+.chars()
+.enumerate()
+.map(|(index, c)| {
+ifletSome(pos) = indexes.iter().position(|&x| x == index){
+if(i >> pos)&1 == 1{ letter_digit[&c]}else{ c }
+}else{
+ c
+}
+})
+.collect::<String>(),
+0x10,
+)
+.unwrap()
 })
 })
 }