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Zhicheng Wang 2016-07-26 08:16:57 +08:00
parent 3233fc4a76
commit ed8b3cd9e0
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public/docs/ts/latest/tutorial/toh-pt6.jade
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@ -744,8 +744,8 @@ block observables-section
If we passed every user keystroke directly to the `HeroSearchService`, we'd unleash a storm of http requests. If we passed every user keystroke directly to the `HeroSearchService`, we'd unleash a storm of http requests.
Bad idea. We don't want to tax our server resources and burn through our cellular network data plan. Bad idea. We don't want to tax our server resources and burn through our cellular network data plan.
如果我们直接把每一次用户按键都直接传给`HeroSearchService`，就会发起一场Http请求的风暴。 如果我们直接把每一次用户按键都直接传给`HeroSearchService`，就会发起一场Http请求风暴。
这可不好玩。我们不希望占用服务器资源，不想也耗尽网络带宽。 这可不好玩。我们不希望占用服务器资源，也不想耗尽网络带宽。
Fortunately we can chain `Observable` operators to the string `Observable` that reduce the request flow. Fortunately we can chain `Observable` operators to the string `Observable` that reduce the request flow.
We'll make fewer calls to the `HeroSearchService` and still get timely results. Here's how: We'll make fewer calls to the `HeroSearchService` and still get timely results. Here's how:
@ -803,7 +803,7 @@ block observables-section
We are content for now to discard unwanted results. We are content for now to discard unwanted results.
注意，_取消_`HeroSearchService`的可观察对象并不会实际中止（abort）一个未完成的http请求，除非有一天我们支持了这个特性，这个问题我们以后再讨论。 注意，_取消_`HeroSearchService`的可观察对象并不会实际中止（abort）一个未完成的http请求，除非有一天我们支持了这个特性，这个问题我们以后再讨论。
目前我们的任务只是丢弃不希望的结果。 目前我们的做法只是丢弃不希望的结果。
:marked :marked
* `catch` intercepts a failed observable. * `catch` intercepts a failed observable.
@ -913,7 +913,7 @@ block filetree
:marked :marked
## Home Stretch ## Home Stretch
## 最后的坦途 ## 最后冲刺
We are at the end of our journey for now, but we have accomplished a lot. We are at the end of our journey for now, but we have accomplished a lot.