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lz:
You can be told clearly, (without deleting the reconstruction, or manually editing), the name of the node element cannot be changed dynamically. This is like opening a database table, it will never be allowed to modify the name of the field while opening the table. In fact, for any data structure, such as structure, class, when used in memory, it is not allowed to modify the names of its members. If you think about it, getting information depends on these structural fields. If you modify it during use, will the memory not be messed up? |
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