Treat NULL as empty vectors in vars argument of _at() variants?

[earthcli]

when the vars is NULL, mutate_each_ function will execute the functions on each column, while I expect do nothing!

mutate_each_(data.frame(x=1:5,y=3),funs(.*3),vars=NULL)

[lionel-]

These functions are deprecated. mutate_at() seems to do the right thing.

[earthcli]

Thanks!
but mutate_at also not work with .vars=NULL
mutate_at(data.frame(x=1:5,y=3),funs(.*3),.vars=NULL)

Error: .vars must be a character/numeric vector or a vars() object, not NULL

[lionel-]

It works with an empty vector, which you can create with vars(). We may want to treat NULL as empty vectors though, since we've been doing that in purrr's typed mappers in the last release.

[lionel-]

For now you can work around this with myvars %||% vars() if myvars might be NULL.

[earthcli]

Thank you very much!
I ask this because I have written some functions before. I will wait for the new version, otherwise I have to modify all my old functions.

[lock]

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