Character value predicates

These value predicates are designed to identify common values that appear in character vectors.

Usage

is_blank(x)

is_missing(x)

Arguments

x

vector to be tested

Details

• is_blank() identifies "" or whitespace of any length

• is_missing() identifies NA's and blanks

See also

Other value predicates: is_invariant(), num_val_predicates

Other predicates: is_curie(), is_invariant(), lgl_predicates, num_val_predicates, obo_ID_predicates