ein: Exists and (not) in
In HughParsonage/hutils: Miscellaneous R Functions and Aliases

%ein%

R Documentation

Exists and (not) in

Description

A common blunder in R programming is to mistype one of a set of filters without realizing. This function will error if any member of the values to be matched against is not present.

Usage

lhs %ein% rhs

lhs %enotin% rhs

Arguments

`lhs`	Values to be matched
`rhs`	Values to be matched against.

Value

Same as %in% and %notin%, unless an element of rhs is not present in lhs, in which case, an error.

Examples

# Incorrectly assumed to include two Species
iris[iris$Species %in% c("setosa", "versicolour"), ]
## Not run: 
# Error:
iris[iris$Species %ein% c("setosa", "versicolour"), ]

## End(Not run)

HughParsonage/hutils documentation built on Feb. 12, 2023, 8:26 a.m.