Docs: Explain ALTREP deferred string materialization for collect() (#724)#894
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maxthecat2024 wants to merge 1 commit intotidyverse:mainfrom
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Docs: Explain ALTREP deferred string materialization for collect() (#724)#894maxthecat2024 wants to merge 1 commit intotidyverse:mainfrom
collect() (#724)#894maxthecat2024 wants to merge 1 commit intotidyverse:mainfrom
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Fixes #724
This PR adds a
@detailsblock to thecollect()documentation and a note to theprudencevignette explaining why callingstr()on a collected duckplyr dataframe causes a one-time performance hit.As discussed in the issue, this clarifies for users that duckplyr relies heavily on ALTREP, meaning that string columns defer memory allocation even after
collect()is called until the values are explicitly accessed. This makescollect()extremely fast but pushes the internal materialization cost to the first time the data is read.