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Assertive programming for R analysis pipelines

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I wanted to get feedback on potentially writing a PR implementing this. I'm imagining something along the lines of ```r options(assertr.success_fun = assertr::success_logical) ``` **Use case:** many independent chains, such...

I am wondering whether you all had previously considered reading in assert/verify statements from a file. In my explorations of TDD with data analysis, I came across the nifty [`tdda`](https://tdda.readthedocs.io/en/latest/)...

I often want to do a set of checks on the columns of data.frames before doing checks on the values within each column itself. For example, I want to check...

On behalf of @tonyfischetti :wink:, cc @ropensci/admin Co-maintainer(s) would take some of the load off submitted issues. :smile_cat:

help wanted

With the predicate `in_set` with argument `inverse=TRUE`, the argument `allow.na` works in the opposite way to what is expected. ``` library(dplyr) library(survival) veteran_totals = veteran %>% group_by(celltype) %>% summarise(cell_total =...