[O] Optimize isAssignmentsReady()

src/components/app/app.ts

@@ -164,7 +164,7 @@ export default class App extends Vue
         });
 
         // Wait for assignments to be ready.
-        pWaitFor(() => this.isAssignmentsReady()).then(() =>
+        pWaitFor(() => this.courses.every(c => c.assignments != null)).then(() =>
         {
             // Filter courses
             this.filteredCourses = CourseUtils.getGradedCourses(this.courses);
@@ -174,21 +174,6 @@ export default class App extends Vue
         });
     }
 
-    /**
-     * Are assignments ready or not
-     *
-     * @returns boolean Ready or not
-     */
-    private isAssignmentsReady(): boolean
-    {
-        for (const course of this.courses)
-        {
-            if (course.assignments == null) return false;
-        }
-
-        return true;
-    }
-
     /**
      * Check the courses' grading algorithms. (Total-mean or percent-type)
      */