An object reference check is fast - much faster than a deep check for differences - so Angular can quickly determine if it can skip both the pipe execution and a view update.

对象引用的检查是非常快的(比递归的深检查要快得多)，所以angular可以快速的决定是否应该跳过管道执行和视图更新。

youdao

If it is easier to check a return value, or call an API to change a setting then go deep... and stop messing around on the surface.

如果检查一个返回值或者调用一个API来改变设置会更简单，那么就深入下去，停止在UI上浪费时间了。

youdao

The scientists also check water in deep wells.

科学家还检查深井里的水。

youdao

Nobody wants to hear the words "And we see from our deep background check that Sir enjoys the Journal"!

CNN: What your hotel knows about you

So while other, less refined bloggers slaver over that other stuff in the issue, I used my Samsung Galaxy tablet (no iPad in my budget just yet) to do the deep reporting and check out all the ads.

FORBES: Sports Illustrated Swimsuit Issue: Beautiful Models! Ugly Ads

They looked very good when you drove up to them, but actually they were waving a lot of people through and not doing anything close to a deep search of cars or check of Ids, it appeared.

NPR: Suicide Bombers Hit International Force in Sinai