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Discussion on: Singly Linked List: A Python Implementation

ekand profile image
Erik Anderson Author

Thank for you the comment!
That's an interesting observation about the graph. But there's one thing about that I don't understand. Wouldn't the code still need some mechanism to keep track of the first node? It seem to me that, without a pointer to the first node, that node would get lost and none of the other nodes could be accessed.
From what I've learned, it seems sensible to make that pointer to the first node be part of another class, perhaps a class called Graph. Is there another approach I could consider?

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brainfrz profile image
Terry W

In this case, whatever the calling code was would need to save the head pointer in the calling function and pass it around. This isn't exactly an antipattern as we do need to pass around both a string and its length in some languages like C, but it obviously isn't preferable.

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ekand profile image
Erik Anderson Author

Thanks for explaining that for me.