scalar-type-predicates: Scalar type predicates

In rlang: Functions for Base Types and Core R and 'Tidyverse' Features

Scalar type predicates

Description

These predicates check for a given type and whether the vector is "scalar", that is, of length 1.

In addition to the length check, is_string() and is_bool() return FALSE if their input is missing. This is useful for type-checking arguments, when your function expects a single string or a single TRUE or FALSE.

Usage

is_scalar_list(x)

is_scalar_atomic(x)

is_scalar_vector(x)

is_scalar_integer(x)

is_scalar_double(x)

is_scalar_complex(x)

is_scalar_character(x)

is_scalar_logical(x)

is_scalar_raw(x)

is_string(x, string = NULL)

is_scalar_bytes(x)

is_bool(x)

Arguments

x	object to be tested.
string	A string to compare to x. If a character vector, returns TRUE if at least one element is equal to x.

See Also

type-predicates, bare-type-predicates

rlang documentation built on June 22, 2024, 9:31 a.m.