perf(scan): fast-path for scanning scalars

benlesh · benlesh · commit 0201b929481f · 2015-10-14T10:06:09.000-07:00
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);
+  }
 }

Original file line number	Diff line number	Diff line change
`@@ -85,4 +85,8 @@ export default class ScalarObservable<T> extends Observable<T> {`
`85`	`85`	`return new ScalarObservable(result);`
`86`	`86`	`}`
`87`	`87`	`}`
	`88`	`+`
	`89`	`+ scan<R>(project: (acc: R, x: T) => R, acc?: R): Observable<R> {`
	`90`	`+ return this.reduce(project, acc);`
	`91`	`+ }`
`88`	`92`	`}`