These are always kind of fun, not least because of the variety of different
replies that "work" at least somewhat. Here's mine:
> stringa <- "[2440810] / www.tinyurl.com/hgaco4fha3"
> sub("^(.+)www\\.(.+)\\.com.+","\\1\\2",stringa)
[1] "[2440810] / tinyurl"
Note the use of doubled backslashes
Hi Omar,
you are almost there but! Your first substitution looks 'www' as the
start of the line followed by anything (which then do nothing), so your
second substitution removes everything from the first '.' to be found
(which is the one after www).
What you want to do is
x <- "[2440810] /
Hi, I need help for cleaning this:
"[2440810] / www.tinyurl.com/hgaco4fha3"
My desired output is:
"[2440810] / tinyurl".
My attemps:
stringa <- "[2440810] / www.tinyurl.com/hgaco4fha3"
b <- sub('^www.', '', stringa) #wanted to get rid of "www." part. Until
first dot.
b <- sub('[.].*', '',
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