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Vector content checks

Source: R/content_checks.R
content_checks.Rd

Quick checks for what a vector contains. is.constant() is TRUE when x holds at most one unique value (ignoring NA), and is.binary() is TRUE when it holds at most two.

Usage

is.constant(x)

is.binary(x)

Arguments

x

object to be tested

Value

A logical value.

Examples

is.constant(c(1, 1, 1))     # TRUE
#> [1] TRUE
is.constant(c(1, 2, 1))     # FALSE
#> [1] FALSE
is.binary(c("a", "b", NA))  # TRUE
#> [1] TRUE
is.binary(c("a", "b", "c")) # FALSE
#> [1] FALSE