| 楼NO.191 发布时间：2025/8/7 15:22:37 |
The choice of whether to use WITH-SLOTS versus
WITH-ACCESSORS is the same as the choice between SLOT-VALUE and an accessor function: low-level code that provides the basic
functionality of a class may use SLOT-VALUE or WITH-SLOTS to directly manipulate slots in ways not supported by accessor functions or to
explicitly avoid the effects of auxiliary methods that may have been defined on the
accessor functions. WITH-SLOTS provides direct access to the slots, as if by SLOT-VALUE, while WITH-ACCESSORS provides a shorthand for accessor methods.
The form of WITH-ACCESSORS is the same as WITH-SLOTS except each
element of the slot list is a two-item list containing
a variable name and the name of an accessor function. However,
:class slots are accessed the same as :instance slots--they're accessed with SLOT-VALUE or
an accessor function, which means you can access the slot value only through an instance of
the class even though it isn't actually stored in the
instance.
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| 楼NO.192 发布时间：2025/8/7 15:01:48 |
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| 楼NO.193 发布时间：2025/8/7 13:00:28 |
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| 楼NO.194 发布时间：2025/8/7 11:35:37 |
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| 楼NO.195 发布时间：2025/8/7 9:24:35 |
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