Count set difference

Find the length of the set of difference between x and y vectors.

count_diff(x, y, ignore.case = FALSE)

Arguments

x

A vector to check.

y

A vector to compare against.

ignore.case

logical; if FALSE, the pattern matching is case sensitive and if TRUE, case is ignored during matching.

Value

The number of unique values of x not in y.

Details

sum(x %out% y)

See also

Other counting wrappers: count_in(), count_na(), count_out(), na_in(), na_out(), na_rep(), prop_distinct(), prop_in(), prop_na(), prop_out(), what_in(), what_out()

Examples

# only unique values are checked
count_diff(c("VT", "NH", "ZZ", "ZZ", "ME"), state.abb)
#> [1] 1