R/filter.R
    filter_at_grepl.RdFilter at a variable that contains or doesn't contain a phrase
filter_at_grepl( data, col, grepl_phrase, evaluates_to = TRUE, ignore.case = TRUE )
| col | column to filter | 
|---|---|
| grepl_phrase | phrase that is being filtered for | 
| evaluates_to | whether the filter is for a grepl evaluation of TRUE or FALSE. Defaults to TRUE. | 
| ignore.case | boolean the ignore.case argument of grepl function | 
| dataframe | input dataframe |