Helper function: Negation/Opposite of %in%

%not_in% <- function(a,b){ ! a %in% b }

a %not_in% b

Arguments

a	vector or NULL: the values to be matched.
b	vector or NULL: the values to be matched against.

Value

A logical vector, indicating if a match was not located for each element of a. The values are TRUE or FALSE and never NA.

Examples

1:5 %not_in% 3:5
#> [1]  TRUE  TRUE FALSE FALSE FALSE