[Rd] Named backreference in gsub()?

Henrik Bengtsson hb at stat.berkeley.edu
Sun Oct 4 23:46:15 CEST 2009


Thanks, it works like a charm.

/Henrik

On Sat, Oct 3, 2009 at 7:03 AM, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
> strapply in the gsubfn package matches a regular expression and passes
> each back reference as a separate argument to the indicated function,
> in this case paste.  Any number of back references may be used.  Here
> is an example where there are more than 9:
>
>> # pass each back reference in regular expression to function
>> # returning function's output
>> library(gsubfn)
>> strapply("abcdefghijklmnop", "(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)", paste)
> [[1]]
> [1] "a b c d e f g h i j"
>
> See home page at: http://gsubfn.googlecode.com
>
> On Sat, Oct 3, 2009 at 2:17 AM, Henrik Bengtsson <hb at stat.berkeley.edu> wrote:
>> Hi,
>>
>> I'm running out of the *numbered* backreferences \\1, \\2, ..., \\9
>> for gsub().  Does R support *named* backreferences, and if so, what is
>> the syntax?
>>
>> Thanks
>>
>> Henrik
>>
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>



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