From 17fdff594d12ad80d44ea413b98d6fc888fd541a Mon Sep 17 00:00:00 2001
From: kageru <kageru@encode.moe>
Date: Sat, 18 May 2019 15:16:59 +0200
Subject: [PATCH] =?UTF-8?q?refactored=20is=5Fsubsequence=20(thanks,=20K?=
 =?UTF-8?q?=C3=BCbi)?=
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---
 src/lib.rs | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 8b9d305..1a8af80 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -18,29 +18,20 @@ fn is_subsequence(needle: &str, string: &str) -> bool {
     // we need to explicitly convert here to iterate over chars
     // (UTF-8, so possibly multiple bytes long)
     let mut chars = string.chars();
-    let needle_chars = needle.chars();
-    for nc in needle_chars {
-        loop {
-            match chars.next() {
-                Some(current) => {
-                    // if the character matches, break and continue with the next nc
-                    if current == nc {
-                        break;
-                    }
-                }
-                _ => return false
+    'needle: for nc in needle.chars() {
+        for c in &mut chars {
+            if c == nc {
+                continue 'needle;
             }
         }
+        return false;
     }
     true
 }
 
 #[cfg(test)]
 mod tests {
-    use crate::{
-        filter_substring,
-        filter_subsequence
-    };
+    use crate::{filter_subsequence, filter_substring};
 
     #[test]
     fn test_filter_substring_single() {