list_named | R Documentation |
A version of list(...)
, but with “automatically”
named list components.
list_(...)
... |
components to make up the resulting |
The names are extracted from sys.call()
, and the function
is written to be fast (rather than easy to ready for the uninitiated ;-)
a list
with the components in the arguments with
names
taken from their call to list_(..)
.
Martin Maechler
list
, names
a <- 1:4; lett <- letters[1:9]; CH <- "Suisse"
all.equal(list (a, lett),
list_(a, lett)) # "names for current but not for target"
str(list(a, lett, CH)) # [[1]], [[2]], .. (no names)
str(list_(a, lett, CH))# $a $lett ..
stopifnot(identical( list (a, lett, CH),
unname(L <- list_(a, lett, CH))),
is.list(L), names(L) == c("a", "lett", "CH"),
identical(lett, L$lett) ## etc
)
## The function is currently defined as
function (...) `names<-`(list(...), vapply(sys.call()[-1L], as.character, ""))
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