perf(scan): fast-path for scanning scalars

ReactiveX · Oct 14, 2015 · 0201b92 · 0201b92
1 parent aca2d37
commit 0201b92
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/observables/ScalarObservable.ts b/src/observables/ScalarObservable.ts
@@ -85,4 +85,8 @@ export default class ScalarObservable<T> extends Observable<T> {
       return new ScalarObservable(result);
     }
   }
+
+  scan<R>(project: (acc: R, x: T) => R, acc?: R): Observable<R> {
+    return this.reduce(project, acc);
+  }
 }