From de4b32465147a5a460e5a382be2718b81343eb0f Mon Sep 17 00:00:00 2001
From: Anders Olsson <anders.e.olsson@gmail.com>
Date: Mon, 13 Jun 2022 11:35:08 +0200
Subject: [PATCH] Remove Display impl, better to use Debug

---
 README.md       |  3 ++-
 src/gaussian.rs | 25 ++-----------------------
 src/player.rs   | 12 ------------
 3 files changed, 4 insertions(+), 36 deletions(-)

diff --git a/README.md b/README.md
index 1a32353..a46f319 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,5 @@ Rust port of [TrueSkillThroughTime.py](https://github.com/glandfried/TrueSkillTh
 
 ## Todo
 
-- [ ] Change `time` to always be a u64 (or usize)?
+- [ ] Add examples (use same TrueSkillThroughTime.py)
+- [ ] Change `time` to always be a u64 (or usize?)
diff --git a/src/gaussian.rs b/src/gaussian.rs
index 5c7f7f4..e502b9f 100644
--- a/src/gaussian.rs
+++ b/src/gaussian.rs
@@ -1,4 +1,3 @@
-use std::fmt;
 use std::ops;
 
 use crate::{utils, MU, SIGMA};
@@ -38,26 +37,12 @@ impl Gaussian {
         ((self.mu() - m.mu()).abs(), (self.sigma() - m.sigma()).abs())
     }
 
-    pub fn exclude(&self, m: Gaussian) -> Gaussian {
-        Gaussian::new(
+    pub fn exclude(&self, m: Gaussian) -> Self {
+        Self::new(
             self.mu() - m.mu(),
             (self.sigma().powi(2) - m.sigma().powi(2)).sqrt(),
         )
     }
-
-    /*
-    def forget(self,gamma,t):
-        return Gaussian(self.mu, math.sqrt(self.sigma**2 + t*gamma**2))
-
-    def delta(self, M):
-        return abs(self.mu - M.mu) , abs(self.sigma - M.sigma)
-
-    def exclude(self, M):
-        return Gaussian(self.mu - M.mu, math.sqrt(self.sigma**2 - M.sigma**2) )
-
-    def isapprox(self, M, tol=1e-4):
-        return (abs(self.mu - M.mu) < tol) and (abs(self.sigma - M.sigma) < tol)
-    */
 }
 
 impl Default for Gaussian {
@@ -69,12 +54,6 @@ impl Default for Gaussian {
     }
 }
 
-impl fmt::Display for Gaussian {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "N(mu={:.3}, sigma={:.3})", self.mu, self.sigma)
-    }
-}
-
 impl ops::Add<Gaussian> for Gaussian {
     type Output = Gaussian;
 
diff --git a/src/player.rs b/src/player.rs
index c0d1e8a..14c6a5a 100644
--- a/src/player.rs
+++ b/src/player.rs
@@ -1,5 +1,3 @@
-use std::fmt;
-
 use crate::{Gaussian, BETA, GAMMA, N_INF};
 
 #[derive(Clone, Copy, Debug)]
@@ -35,13 +33,3 @@ impl Default for Player {
         Player::new(Gaussian::default(), BETA, GAMMA, N_INF)
     }
 }
-
-impl fmt::Display for Player {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(
-            f,
-            "Player({}, beta={:.3}, gamma={:.3})",
-            self.prior, self.beta, self.gamma
-        )
-    }
-}