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

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