perf(take): add fast-path for take over scalars

benlesh · benlesh · commit 33053b1bf532 · 2015-10-14T10:06:10.000-07:00
diff --git a/src/observables/ScalarObservable.ts b/src/observables/ScalarObservable.ts
@@ -100,4 +100,11 @@ export default class ScalarObservable<T> extends Observable<T> {
     }
     return this;
   }
+
+  take(count: number): Observable<T> {
+    if (count > 0) {
+      return this;
+    }
+    return new EmptyObservable();
+  }
 }

Original file line number	Diff line number	Diff line change
`@@ -100,4 +100,11 @@ export default class ScalarObservable<T> extends Observable<T> {`
`100`	`100`	`}`
`101`	`101`	`return this;`
`102`	`102`	`}`
	`103`	`+`
	`104`	`+ take(count: number): Observable<T> {`
	`105`	`+ if (count > 0) {`
	`106`	`+ return this;`
	`107`	`+ }`
	`108`	`+ return new EmptyObservable();`
	`109`	`+ }`
`103`	`110`	`}`