[R] regular expression question

[John McKown]

No HTML please. it makes me itchy! <grin/>

> s <- c("lngimbintrhofixed","lngimbnointnorhofixed","test")
> sub('(no)?rhofixed$','',s)
[1] "lngimbint"   "lngimbnoint" "test"
>


On Mon, Jan 12, 2015 at 1:37 PM, Mark Leeds <markleeds2 at gmail.com> wrote:

> Hi All: I have a regular expression problem. If a character string ends
> with "rhofixed" or "norhofixed", I want that part of the string to be
> removed. If it doesn't end with either of those two endings, then the
> result should be the same as the original. Below doesn't work for the
> second case. I know why but not how to fix it. I lookrd st friedl's book
> and I bet it's in there somewhere but I can't find it. Thanks.
>
> s <- c("lngimbintrhofixed","lngimbnointnorhofixed","test")
>
> result <- sub("^(.*)([n.*|r.*].*)$","\\1",s)
>
>  print(result)
> [1] "lngimbint"     "lngimbnointno" "test"
>
>         [[alternative HTML version deleted]]
>
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​
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Maranatha! <><
John McKown

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