simple conditional expression

常见例句

双语例句

• As in most every language, Scala’s if evaluates a conditional expression, then proceeds to a block if the result is true or branches to an alternate block if the result is false. A simple example
  和大多数语言一样，Scala 的if 测试一个条件表达式，然后根据结果为真或假来跳转到响应语句块中。
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