rlang: has_length – R documentation

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has_length

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)

rlang

Functions for Base Types and Core R and 'Tidyverse' Features

v0.4.11

MIT + file LICENSE

Authors

Lionel Henry [aut, cre], Hadley Wickham [aut], mikefc [cph] (Hash implementation based on Mike's xxhashlite), Yann Collet [cph] (Author of the embedded xxHash library), RStudio [cph]

Initial release