Question

I do:

assign('test', 'bye')
test
[1] "bye"

now, I have the vector inside ‘test‘ variable.

I would like to use the string inside ‘test’ variable as name of a column of the follow list:

list(test=c(1:10))
$test
[1]  1  2  3  4  5  6  7  8  9 10

But I would like to use ‘bye’ as NAME (because ‘bye’ is wrote inside the test variable)
How can I do it?

Answer 1

I don’t think eval or assign are at all necessary here; their use usually (although not always) indicates that you’re doing something the hard way, or at least the un-R-ish way.

> test <- "bye"
> L <- list(1:10)  ## c() unnecessary here too
> names(L) <- test
> L
$bye
 [1]  1  2  3  4  5  6  7  8  9 10

If you really want to do this in a single statement, you can do:

L <- setNames(list(1:10), test)

or

L <- structure(list(1:10), .Names=test)