fritools (version 4.6.0)

is_scalar: Check Whether an R Object is Scalar

Description

R is vector based. But I often come across vectors of length 1 or arrays and matrices with a single element.

Usage

is_scalar(x)

Value

A boolean.

Arguments

x

An R object.

See Also

Other logical helpers: get_run_r_tests(), is_batch(), is_cran(), is_false(), is_force(), is_installed(), is_not_false(), is_null_or_true(), is_of_length_zero(), is_r_cmd_check(), is_r_package_installed(), is_running_on_fvafrcu_machines(), is_running_on_gitlab_com(), is_scalar_convertible2numeric(), is_success(), is_true(), is_version_sufficient(), is_windows()

Examples

x <- "C"
is_scalar(x)
x <- LETTERS[1:24]
!is_scalar(x)
is_scalar(x[3])
dim(x) <- c(6, 4)
!is_scalar(x)
is_scalar(x[1, 2])
dim(x) <- c(2, 3, 4)
!is_scalar(x)
is_scalar(x[1, 2, 3])
is_scalar(list(1))