[R] interactively getting alist of functions for a given package?

[Duncan Murdoch]

On 23/06/2021 2:51 p.m., Jeff Newmiller wrote:
> RStudio seems to have done this. If you have it, try typing
> 
> ggplot2::line
> 
> and the popup will suggest (among other options) geom_line.

Yes, though it may not be quite right.  Back in May when I typed

  library(rgl<Enter>

their autocompletion gave me

  library(Rglpk)

(See https://github.com/rstudio/rstudio/issues/9293).  Today that's not 
happening, so maybe it's been fixed, or is only intermittent.

Duncan Murdoch



> 
> On June 23, 2021 10:10:07 AM PDT, Duncan Murdoch <murdoch.duncan using gmail.com> wrote:
>> On 23/06/2021 8:37 a.m., Greg Minshall wrote:
>>> hi.
>>>
>>> at the R prompt, i often hit, e.g., "data.table::<TAB>", to try to
>> find
>>> a routine in a give package.
>>>
>>> however, some packages have a *lot* of functions (i'm looking at
>> *you*,
>>> ggplot2...), so if i know the routine name starts with, e.g., "set",
>> i
>>> can filter the returned list of routines by typing
>>> "data.table::set<TAB>" to get a list of completions.
>>>
>>> but, what if i know the name *contains*, but doesn't start with,
>> "set"?
>>>
>>> is there an obvious way to find this?  something like the unix-y
>>> : ls /bin | grep -i "set"
>>
>> Bert gave you an answer that depends on ls().  Whether there's
>> something
>> like "set<TAB>" that can return "asset" probably depends on your front
>> end, and may be customizable using the facilities described in
>> ?rcompgen.
>>
>> Duncan Murdoch
>>
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>