There is a collection in S4Vectors that test atomic types and return a
logical.
isSingleInteger
isSingleNumber
isSingleNumberOrNA
isSingleString
isSingleStringOrNA
isTRUEorFALSE
> isSingleNumber(1:5)
[1] FALSE
> isSingleNumber(NA)
[1] FALSE
Val
On 07/22/2015 04:22 PM, Jim Hester wrote:
Not sure about within Bioconductor but Hadley has a package to do this.
https://github.com/hadley/assertthat
On Wed, Jul 22, 2015 at 4:13 PM, Michael Love <michaelisaiahl...@gmail.com>
wrote:
it's slightly annoying to write
foo <- function(x) {
if ( ! is.numeric(x) ) stop("x should be numeric")
if ( ! length(x) == 2 ) stop("x should be length 2")
c(x[2], x[1])
}
i wonder if we could have some core functions that test the class and
the length in one and give the appropriate stop message.
maybe this exists already
-Mike
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