keep_if_in {Nmisc}

Keep elements present in x and not contained in y

Description

Unlike intersect, it does not remove duplicates in x and keeps its order.

Usage

keep_if_in(x, y)

x %if_in% y

Arguments

x

Source vector.

y

Destination vector (of the same mode as x).

Value

A filtered version of x.

See Also

keep_if_not_in

Examples

keep_if_in(1:5, 3:6)
# returns [3, 4, 5]

keep_if_in(c(4, 3, 4, 3, 1), 3:6)
# returns [4 3 4 3]