The case ex: syntax you see in Listing 8 is part of another Scala construct, the match expression, which is used for pattern matching in Scala.

清单8中所示的case ex：语法是另一个Scala结构(匹配表达式)的一部分，该表达式用于Scala中的模式匹配。

youdao

In case of failing to do that, he is supposed to bear liabilities for default or, with the consent of ex-owner, Christie's may put the items up for auction again.

假如没有付款，他将因未履行义务然而受到债务处罚。或者，在前文物拥有者的同意下，佳士得可以对其进行再次拍卖。

youdao

The effective- ness of the procedure is demonstrated through an ex- ample involving a case with a drawer and two doors.

并以两门一屉小柜为例说明了此法的有效性。

youdao

He is the second police officer to be convicted under Operation Elveden, following the case of ex-counter-terrorism detective April Casburn.

BBC: John Terry

In the case of ex- service personnel who turn to BigWhiteWall, their online community is made up of civilians as well as military personnel.

FORBES: Social Business and the Future of Psychological Well-Being Programs

The choice between an ex ante prohibition of certain conduct and an ex post, case-by-case review of complaints turns on the potential for efficiency justifications.

FORBES: Program Access Reform at the FCC: Are Exclusive Programming Deals a Good Thing?