Avoid Losing Column Names when Adding Rows to Empty Data Frame in R (Example) | Keep Variable Names

Avoid Losing Column Names when Adding Rows to Empty Data Frame in R (Example) | Keep Variable Names

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Remove Data Frame Columns by Name in R (6 Examples) | Drop Variable | subset, within, select & setDT
Remove Data Frame Columns by Name in R (6 Examples) | Drop Variable | subset, within, select & setDT
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