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r implicit-conversion r-s3 posixlt

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January 26, 2026 Score: 3 Rep: 711 Quality: Medium Completeness: 60%

I think I figured out how this works - there's actually no such thing as a data.frame with a POSIXlt column.

When I try to put a POSIXlt into a data.frame, it is converted to a POSIXct (which is an S3 object that stores date as a single numeric representation rather than storing it as a list like POSIXlt does):

df