CODEWITHSUNDEEP
r
kjo
kjo

Reputation: 35331

How to specify values and names in bulk when creating a vector (or list)?

I know that one can do something like this

x <- c(foo = 1, bar = 4)

Suppose I want to create a vector whose values and names are to be obtained from expressions such as the_values(some, args) and the_names(some, args)?

I know that I can create the desired vector via two assignments:

x <- the_values(some, args)
names(x) <- the_names(some, args)

Is there a way to achieve the same thing with a single assignment?

I'm also interested in the analogous question for lists.

Upvotes: 3

Views: 59

Answers (1)

akrun
akrun

Reputation: 887881

We can use setNames

x <- setNames(the_values(some, args), the_names(some, args))

For the first example

setNames(c(1,4), c("foo", "bar"))

It would work for both list and vectors

setNames(list(1,4), c("foo", "bar))

Another option is names<-

x <- `names<-`(the_values(some, args), the_names(some, args))

Upvotes: 3

Related Questions