Note that you can use closures and reference variables later too.
注意，稍后您也可以使用闭包和引用变量。
Expressions to test the type compatibility of two object reference variables with various data types.
表达式测试两个对象引用变量与各数据类型的类型兼容性。
Expressions to test the type compatibility of two object reference variables with various data types.
表达式测试两个对象引用变量与各数据类型的类型兼容性。
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