[R] lapply and paste

[R. Michael Weylandt]

I think you're confused about the need for lapply -- paste is
vectorized so this

paste("filename_", suff, ".ext", sep = "")

will work. But if you want to use lapply (for whatever reason) try this:

lapply(suff, function(x) paste("filename_", x, ".ext", sep = "")

Michael

On Wed, Mar 28, 2012 at 2:31 PM, Ed Siefker <ebs15242 at gmail.com> wrote:
> I have a list of suffixes I want to turn into file names with extensions.
>
> suff<- c("C1", "C2", "C3")
> paste("filename_", suff[[1]], ".ext", sep="")
> [1] "filename_C1.ext"
>
> How do I use lapply() on that call to paste()?
> What's the right way to do this:
>
> filenames <-  lapply(suff, paste, ...)
>
> ?
>
> Can I have lapply() reorder the arguments to FUN?
>
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