--- a/rust/src/types.rs	Thu Feb 16 23:17:51 2017 +0800
+++ b/rust/src/types.rs	Thu Feb 16 23:19:12 2017 +0800
@@ -46,7 +46,7 @@
 
 #[derive(Debug)]
 pub struct Readings {
-    temps: HashMap<String, Option<f32>>,
+    pub temps: HashMap<String, f32>,
 }
 
 impl Readings {
@@ -56,29 +56,12 @@
         }
     }
 
-    pub fn add(&mut self, name: &str, v: Option<f32>) {
-        if let Some(prev) = self.temps.insert(name.to_string(), v) {
-            warn!("Replaced existing reading '{}' {:?} -> {:?}",
-                name, prev, v);
-        }
+    pub fn add(&mut self, name: &str, v: f32) {
+        self.temps.insert(name.to_string(), v);
     }
 
-    pub fn fridge(&self) -> Option<f32> {
-        if let Some(t) = self.temps.get("fridge") {
-            t.clone()
-        } else {
-            warn!("No fridge reading was added");
-            None
-        }
-    }
-
-    pub fn wort(&self) -> Option<f32> {
-        if let Some(t) = self.temps.get("wort") {
-            t.clone()
-        } else {
-            warn!("No wort reading was added");
-            None
-        }
+    pub fn get_temp(&self, name: &str) -> Option<f32> {
+        self.temps.get(name).map(|f| *f)
     }
 }