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Updated last year

can someone explain what the consequence

can someone explain what the consequence of setting 'in_place' to 'true' would be?

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class MetadataExtractor(BaseExtractor):
    """Metadata extractor."""

    ...other code...

    in_place: bool = Field(
        default=True, description="Whether to process nodes in place."
    )

I've been using this class in my pipeline a lot and it's fantastic, but don't quite know what this field does. A low level explanation would be blessed ❤️

Thank you much in advance 🙏

4 comments

LLogan M

Since the nodes are passed in as a list, they can either be modified in place (i.e. modifying the original list that was passed in), or they can modify copies of the original nodes (the input list remains un-touched)

This is a symptom of how things are pass-by-reference vs pass-by-value in python

BBP

ah so modifying in place would save compute but is quite dangerous in case you want to use those same nodes for another part of the program later on with the assumption that another sub process didn't alter the original state of the nodes?

LLogan M

You got it. But it defaults to True since in most cases modifying in place is usually fine

BBP

👀 👀 👀 interestinggg...

Thank you my captain 🫡

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