so we know that R have list() variable, and also know that R has function call names() to give names for variable. For example :
list()
names()
a=
Other possibilities are
as.list(a) # $`number` # [1] 30 # or setNames(list(unname(a)),'number') # $`number` # [1] 30 # or named list with named vector setNames(list(a), 'number') # $`number` # number # 30