Hi Team,
I can write a for loop like this:
for (i in columns(df)){
......
}
But it will working on all column in dataframe df. If I want to work on some of
specific fields (say: the fields' name content 'date'), how should I modify the
for loop? I changed the code below, but it doesn't work.
for (i in columns(df) %in% 'date' ){
.....
}
Thank you,
Kai
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