update pattern generator

1 files changed, 10 insertions, 15 deletions

diff --git a/passwords.rs b/passwords.rs
index 533e282..db2fd9e 100644
--- a/passwords.rs
+++ b/passwords.rs
@@ -1,36 +1,31 @@
 use std::io::{self, Write};
 use std::iter;
 
-fn make_passwords<W: Write>(patterns: &[Vec<u8>],
-                            buffer: &mut Vec<u8>,
-                            i: usize,
-                            writer: &mut W) {
+fn make_passwords<W: Write>(patterns: &[Vec<u8>], buffer: &mut Vec<u8>, i: usize, writer: &mut W) {
     if i == patterns.len() {
         writer.write(&buffer).unwrap();
     } else {
         for c in patterns[i].iter() {
             buffer[i] = *c;
-            make_passwords(patterns, buffer, i+1, writer);
+            make_passwords(patterns, buffer, i + 1, writer);
         }
     }
 }
 
 fn main() {
-    let range = |a, b| {
-        (a as u8 .. b as u8 + 1).collect::<Vec<_>>()
-    };
+    let range = |a, b| (a as u8..b as u8 + 1).collect::<Vec<_>>();
 
-    let patterns: Vec<Vec<u8>> = vec!(
+    let patterns: Vec<Vec<u8>> = vec![
         range('a', 'z'),
         range('1', '9'),
         range('a', 'z'),
         range('a', 'z'),
-        range('a', 'z'),
-    );
+        range('a', 'z')
+    ];
 
-  let mut buffer: Vec<u8> = vec!(0; patterns.len() + 1);
-  buffer[patterns.len()] = '\n' as u8;
+    let mut buffer: Vec<u8> = vec!(0; patterns.len() + 1);
+    buffer[patterns.len()] = '\n' as u8;
 
-  let mut writer = io::BufWriter::new(io::stdout());
-  make_passwords(&patterns, &mut buffer, 0, &mut writer);
+    let mut writer = io::BufWriter::new(io::stdout());
+    make_passwords(&patterns, &mut buffer, 0, &mut writer);
 }