Properties may be any .NET object, ranging from a simple boolean value to the representation of database metadata.

而属性可以是任何.NET对象，从一个简单的布尔值到复杂的数据库元数据。

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Other convenience methods are implemented for retrieving object instances of the numeric and Boolean types by means of their fully qualified name.

实现了其它一些便利方法，通过其全限定名来检索numeric和boolean类型的对象实例。

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The predicate_result object has an implicit constructor that accepts a Boolean value, which explains why the code works fine even though the expected and actual return types of validate_list differ.

predicate_result对象有一个隐式的构造函数，它接受一个boolean值，因此即使validate_list的期望类型和实际返回类型不同，代码仍然会正常运行。

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