EVOLUTION-MANAGER
Edit File: list.first.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: Find the first element that meets a condition</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 list.first {rlist}"><tr><td>list.first {rlist}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Find the first element that meets a condition</h2> <h3>Description</h3> <p>Find the first element that meets a condition </p> <h3>Usage</h3> <pre> list.first(.data, cond) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>.data</code></td> <td> <p>A <code>list</code> or <code>vector</code></p> </td></tr> <tr valign="top"><td><code>cond</code></td> <td> <p>a logical lambda expression</p> </td></tr> </table> <h3>See Also</h3> <p><code><a href="list.last.html">list.last</a></code> </p> <h3>Examples</h3> <pre> x <- list(p1 = list(type='A',score=list(c1=10,c2=8)), p2 = list(type='B',score=list(c1=9,c2=9)), p3 = list(type='B',score=list(c1=9,c2=7))) list.first(x, score$c1 < 10) list.first(x, score$c1 < 9 || score$c3 >= 5) # NULL for all results are NA or FALSE </pre> <hr /><div style="text-align: center;">[Package <em>rlist</em> version 0.4.6.2 <a href="00Index.html">Index</a>]</div> </body></html>