A terse but useful resource is to use R's Help docs: ?regex. It also gives
the R regex syntax, which can of course differ from others, especially in
regard to escapes.
Do note that the rseek.org site is a better place to ask for such info than
here. Or just searching on "regular expressions R".
Be
Well, Wikipedia is probably the place where people who know some topic
can check if people who wrote the article did it right :)
You can try this short subchapter in R for Data Science (by Hadley
Wickham) as a starting point:
https://r4ds.had.co.nz/strings.html#matching-patterns-with-regular-expr
You can check out Wikipedia for regular expressions:
https://en.wikipedia.org/wiki/Regular_expression
On Fri, Oct 22, 2021 at 3:48 PM Steven Yen wrote:
> Thanks, it works!
>
> What can I read to understand more about this part "\\..*$" of the
> pattern? And more such as ^ and $ that I know f
Thanks, it works!
What can I read to understand more about this part "\\..*$" of the
pattern? And more such as ^ and $ that I know from experience?
On 2021/10/22 下午 06:22, Rui Barradas wrote:
Hello,
Use ls() with argument pattern. It accepts a regex and returns a
vector of objects names mat
Hello,
Use ls() with argument pattern. It accepts a regex and returns a vector
of objects names matching the pattern.
rm(list = ls(pattern = "data\\..*$"))
Hope this helps,
Rui Barradas
Às 10:20 de 22/10/21, Steven Yen escreveu:
I like to be able to use a command with something similar to
I like to be able to use a command with something similar to a "wild
card". Below, lines 4 works to delete all three dataframes, but line 5
does not work. Any elegant way to accomplish this? My list of dataframes
can be long and so this would be convenient.
data.1<-data.frame(x=1:3,y=4:6,z=7:9
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