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Checks if NULL using
is.null(x)
chk_null(x, x_name = NULL)vld_null(x)
vld_null(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_null(): Validate NULL
vld_null()
Other chk_nulls: chk_not_null()
chk_not_null()
# chk_null try(chk_null(1)) chk_null(NULL) # vld_null vld_null(NULL) vld_null(1)
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