R: How long is an object?

has_length {rlang} | R Documentation

## How long is an object?

### Description

This is a function for the common task of testing the length of an object. It checks the length of an object in a non-generic way: `base::length()` methods are ignored.

### Usage

    has_length(x, n = NULL)

### Arguments

`x` | A R object.
`n` | A specific length to test `x` with. If `NULL`, `has_length()` returns `TRUE` if `x` has length greater than zero, and `FALSE` otherwise.

### Examples

    has_length(list())
    has_length(list(), 0)

    has_length(letters)
    has_length(letters, 20)
    has_length(letters, 26)

[Package rlang version 0.4.3 Index]