Hi, sorry if it is a too stupid question, but how do I a string search
in R:
 
I have a dataframe A with A$test like:
 
test1
bcdtestblabla2.1bla
cdtestblablabla3.88blabla
 
and I want to search for string that start with 'dtest' and ends with
number and return the location of that substring and the number, so the
end result would be:
 
NA    NA
3    2.1    
2    3.88
 
I find grep can probably do this but I am new to the function so would
like a good example.
 
Thanks,
Richard
 
 

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