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Checks if ... is unused
length(list(...)) == 0L
chk_unused(...)vld_unused(...)
vld_unused(...)
The chk_ function throws an informative error if the test fails.
chk_
Additional arguments.
vld_unused(): Validate ... Unused
vld_unused()
Other chk_ellipsis: chk_used()
chk_used()
# chk_unused fun <- function(x, ...) { chk_unused(...) x } fun(1) try(fun(1, 2)) # vld_unused fun <- function(x, ...) { vld_unused(...) } fun(1) try(fun(1, 2))
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