[R] Help with Regular expression

[Christofer Bogaso]

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?

Thanks for your time.

Happy New Year!