in-notin: Fast '%in%' and %notin% operators

In mtfairbanks/gdt: Tidy Interface to 'data.table'

Fast %in% and ⁠%notin%⁠ operators

Description

Check whether values in a vector are in or not in another vector.

Built using data.table::'%chin%' and vctrs::vec_in() for performance.

Usage

x %in% y

x %notin% y

Arguments

x	A vector of values to check if they exist in y
y	A vector of values to check if x values exist in

Details

Falls back to base::'%in%' when x and y don't share a common type. This means that the behaviour of base::'%in%' is preserved (e.g. "1" %in% c(1, 2) is TRUE) but loses the speedup provided by vctrs::vec_in().

Examples

df <- tidytable(x = 1:4, y = 1:4)

df %>%
  filter(x %in% c(2, 4))

df %>%
  filter(x %notin% c(2, 4))

mtfairbanks/gdt documentation built on June 10, 2025, 6:13 p.m.