[R] Help with Regular expression

David Wolfskill r at catwhisker.org
Wed Jan 3 15:32:05 CET 2018


On Wed, Jan 03, 2018 at 07:56:27PM +0530, Christofer Bogaso wrote:
> Hi,
> 
> I was working on following expression :
> 
> "\":\"03-JAN-2018 16:00:00\""
> 
> 
> This is basically a combination of Date and Time mixed with some Noise.
> 
> I want to extract only Date and Time part i.e. "03-JAN-2018 16:00:00
> 
> I tried following :
> 
> gsub("![0-9][0-9]-[a-zA-Z][a-zA-Z][a-zA-Z]-[0-9][0-9][0-9][0-9]
> [0-9][0-9]:[0-9][0-9]:[0-9][0-9]", "", "\":\"03-JAN-2018 16:00:00\"",
> ignore.case = TRUE)
> 
> Obviously, with above code, I am removing that portion of my string
> which I actually I wanted!
> 
> How can I reverse above code, so that I will be removing that portion
> of my string which I actually I ***NOT*** wanted?
> ....

You may find strptime() more suitable for the intended purpose.

Peace,
david
-- 
David H. Wolfskill				r at catwhisker.org
If you want the best Fake News, go to the best source of it: Donald J. Trump.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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