[datatable-help] Detailed verbose after common data operations?

[mbacou]

Just throwing a more generic question that probably doesn't belong here, but
is there any way with R to get more detailed verbose after common operations
on data.frame or data.table (such as deleting, updating, subsetting or
joining rows) similar to what you get in either SQL, SAS or STATA -- I mean
the standard "xx rows affected" or "xx rows matched" message?

I know this can be achieved with extra lines of code, but how many of us
really check every step manually?

I found myself repeatedly throwing commands (especially subsetting) that do
nothing because of small typos and not always realizing.

Thanks, --Mel.
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