unmatchedkeys: Rows of 'x' whose key is absent from 'y'

In basetable: Fast and Memory-Efficient Base R Table Manipulation

Rows of x whose key is absent from y

Description

Rows of x whose key is absent from y

Usage

unmatchedkeys(x, y, by)

Arguments

x	An atomic vector.
y	An atomic vector, data.frame, or basetable, depending on the function.
by	Character vector of column names identifying groups or join keys.

Value

Rows of x whose key is not present in y.

basetable documentation built on Nov. 14, 2026, 1:08 a.m.