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*. Single (Lamda expression)-First Sight

Source: Internet
Author: User
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Today, I saw something like this. *. Single (P => P. dishcategoryuid. Equals (categoryuid )) This is a little rusty for me. After some searching, I gradually felt a little bit better. --- Single indicates the unique element in the returned sequence that meets the specified conditions. This is Microsoft's explanation. Obviously, an element is returned. Next Lamda expression --- determines whether the returned data meets the requirements of single I am a little bit strange. I hope the heroes will criticize and correct each other, promote each other, and guide each other!

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