[Bioc-devel] testing class and length of function args

[Jim Hester]

Also just found https://github.com/mllg/checkmate

Haven't used it before but it seems well thought out, also impressive test
coverage! (not biased).

On Wed, Jul 22, 2015 at 8:47 PM, Valerie Obenchain <vobencha at fredhutch.org>
wrote:

> 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 <
>> michaelisaiahlove at 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
>>>
>>> _______________________________________________
>>> Bioc-devel at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/bioc-devel
>>>
>>>
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>>
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>>
>
> --
> Computational Biology / Fred Hutchinson Cancer Research Center
> 1100 Fairview Ave. N, Seattle, WA 98109
>
> Email: vobencha at fredhutch.org
> Phone: (206) 667-3158
>

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