[R] how to get all strings in a data frame that start with a particular string
@okov|c@@n@m@r|j@ @end|ng |rom gm@||@com
Fri Apr 10 18:15:45 CEST 2020
I have a data frame (tot) with about 2000 columns. How can I extract
from it all strings that start with E14?
I tried this:
e14 <- sapply(tot, function(x) grepl("^E14", x))
but this returns me just TRUE and FALSE vector, how do I get actual
strings that start with E14?
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