[Bioc-devel] recalling methods

[Vincent Carey]

fwiw sos::findFn("narrow") produces quite a few hits, including

http://finzi.psych.upenn.edu/R/library/GenomicRanges/html/intra-range-methods.html

it may be more effective to parse doc than to hope that the formal metadata
will yield the desired fruit?

On Thu, Dec 4, 2014 at 1:26 PM, Martin Morgan <mtmorgan at fredhutch.org>
wrote:

> On 12/04/2014 09:56 AM, Michael Love wrote:
>
>> I was thinking about a request from someone at Bioc2014 (I can't
>> remember at the moment)
>>
>> As an end-user, if I have an object x, how can I *quickly* recall the
>> main methods for that? As in, without breaking my flow and going to
>> ?myClass or help("myClass-class"). Suppose x is a GRanges, how can I
>> remember that there is a method called narrow() which works on x?
>>
>> showMethods(classes=class(x)) will print out a huge list for many
>> complex Bioc classes. And printTo=FALSE turns this huge list into an
>> unhelpful character vector, e.g.:
>>
>> head(showMethods(classes="GRanges",printTo=FALSE),8)
>> [1] ""                                    "Function \".asSpace\":"
>>    [3] " <not an S4 generic function>"       ""
>>    [5] "Function \".linkToCachedObject<-\":" " <not an S4 generic
>> function>"
>>    [7] ""                                    "Function \".replaceSEW\":"
>>
>> any ideas?
>>
>
>   showMethods(classes="GRanges", where=search())
>
> But this doesn't get 'narrow()' out of the box because it is inheritted
> (from GenomicRanges) and has not yet been invoked (so you'd be able to
> discover it if you'd used it...)
>
>   cl = c("GRanges", names(getClass("GRanges")@contains))
>   showMethods(classes=cl, where=search())
>
> Yep, that's convenient.
>
> Martin
>
>
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>>
>>
>
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