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Checks argument missing using
missing(x)
chk_missing(x, x_name = NULL)vld_missing(x)
vld_missing(x)
The chk_ function throws an informative error if the test fails or returns the original object if successful so it can used in pipes.
chk_
The vld_ function returns a flag indicating whether the test was met.
vld_
The object to check.
A string of the name of object x or NULL.
vld_missing(): Validate Missing Argument
vld_missing()
Currently only checks if value is available (as opposed to whether it was specified).
Other chk_misc: chk_length(), chk_match(), chk_named(), chk_not_any_na(), chk_not_empty(), chk_not_missing(), chk_sorted(), chk_unique(), chk_valid_name()
chk_length()
chk_match()
chk_named()
chk_not_any_na()
chk_not_empty()
chk_not_missing()
chk_sorted()
chk_unique()
chk_valid_name()
# chk_missing fun <- function(x) { chk_missing(x) } fun() try(fun(1)) # vld_missing fun <- function(x) { vld_missing(x) } fun() fun(1)
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