EVOLUTION-MANAGER
Edit File: has_name.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Does an object have an element with this name?</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for has_name {rlang}"><tr><td>has_name {rlang}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Does an object have an element with this name?</h2> <h3>Description</h3> <p>This function returns a logical value that indicates if a data frame or another named object contains an element with a specific name. Note that <code>has_name()</code> only works with vectors. For instance, environments need the specialised function <code><a href="env_has.html">env_has()</a></code>. </p> <h3>Usage</h3> <pre> has_name(x, name) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p>A data frame or another named object</p> </td></tr> <tr valign="top"><td><code>name</code></td> <td> <p>Element name(s) to check</p> </td></tr> </table> <h3>Details</h3> <p>Unnamed objects are treated as if all names are empty strings. <code>NA</code> input gives <code>FALSE</code> as output. </p> <h3>Value</h3> <p>A logical vector of the same length as <code>name</code> </p> <h3>Examples</h3> <pre> has_name(iris, "Species") has_name(mtcars, "gears") </pre> <hr /><div style="text-align: center;">[Package <em>rlang</em> version 1.0.6 <a href="00Index.html">Index</a>]</div> </body></html>