From 7307b179f085f48d9dbe0a707c232926590ef1c1 Mon Sep 17 00:00:00 2001
From: Hykilpikonna <admin@moecraft.cc>
Date: Fri, 6 Dec 2019 18:07:46 -0500
Subject: [PATCH] [U] Cache letterGrade()

---
 src/logic/course.ts | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/src/logic/course.ts b/src/logic/course.ts
index b482108..6a3a102 100644
--- a/src/logic/course.ts
+++ b/src/logic/course.ts
@@ -178,26 +178,19 @@ export default class Course
         });
     }
 
-    private _cacheLetterGrade: string;
-
     /**
      * Get letter grade
      */
     get letterGrade(): string
     {
-        if (this._cacheLetterGrade == null)
+        return this.cache.get('LetterGrade', () =>
         {
             // Get scale
             let scale = GPAUtils.findScale(this.numericGrade);
 
             // Scale not found
-            if (scale == undefined) return this._cacheLetterGrade = '--';
-
-            // Cache
-            this._cacheLetterGrade = scale.letter;
-        }
-
-        return this._cacheLetterGrade;
+            return scale == undefined ? '--' : scale.letter;
+        })
     }
 
     private _cacheNumericGrade: number;