add conexion number control

src/conf/mod.rs

@@ -11,8 +11,8 @@ pub struct Servers{
 }
 
 impl Servers {
-    pub fn new() -> Servers {
-        Servers{
+    pub fn new() -> Self {
+        Self{
             l_servers: Self::get_servers(),
         }
     }
@@ -23,15 +23,13 @@ impl Servers {
         let mut ret = HashMap::new();
         f.read_to_string(&mut s).unwrap();
         let docs = yaml::YamlLoader::load_from_str(&s).unwrap();
-        let docs2;
-        match &docs[0]["servers"] {
-            yaml::Yaml::Hash(ref h) => docs2 = h,
+        let docs2 = match &docs[0]["servers"] {
+            yaml::Yaml::Hash(ref h) => h,
             _ => return ret,
-        }
+        };
 
 
         for (k, v) in docs2{
-            //println!("{}",String::from(doc.as_str().unwrap()));
             ret.insert(String::from(k.as_str().unwrap()),
                     String::from(v.as_str().unwrap()));
         }