Use a subset of available functions

[pkq]

I'm not sure how feasible or useful this would be, but what do folks think about allowing users to select a subset of the functions in a given template? For example, what if I only need map() but none of its siblings? I assume I would run freebase::use_mappers() and manually delete any functions I didn't need. However, it would be nice to be able to pass the names of the functions I want, and get only those functions in the resultant file. Thoughts?

[malcolmbarrett]

I like this idea, too -- something like use_function("function_name"). I actually took a shot at something like this, but it didn't go well. It also wasn't totally clear how to handle the files inserted if you are using a subset and a few of them. Create or check for existing utils.R and either insert or append? I don't know how well this all plays with use_template(), though.

[pkq]

I was thinking of it as an argument to the existing use_ functions (e.g., use_mappers(funs = "map"), in which case, freebase could check for an existing copy of the corresponding file (either the default path, or whatever was passed to the save-as argument, and then append the requested functions, but I don't know enough about usethis to know if that's even possible. A cursory look at use_template suggests probably not, unless there's some way to leverage the data and partials arguments in the whisker::whisker.render() function used under the hood...