modifyList: Recursively Modify Elements of a List

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Otherwise, the corresponding element, if present, is deleted from <code>x</code>. </p> </td></tr> </table> <h3>Value</h3> <p>A modified version of <code>x</code>, with the modifications determined as follows (here, list elements are identified by their names). Elements in <code>val</code> which are missing from <code>x</code> are added to <code>x</code>. For elements that are common to both but are not both lists themselves, the component in <code>x</code> is replaced (or possibly deleted, depending on the value of <code>keep.null</code>) by the one in <code>val</code>. For common elements that are in both lists, <code>x[[name]]</code> is replaced by <code>modifyList(x[[name]], val[[name]])</code>. </p> <h3>Author(s)</h3> <p> Deepayan Sarkar <a href="mailto:Deepayan.Sarkar@R-project.org">Deepayan.Sarkar@R-project.org</a></p> <h3>Examples</h3> <pre> foo <- list(a = 1, b = list(c = "a", d = FALSE)) bar <- modifyList(foo, list(e = 2, b = list(d = TRUE))) str(foo) str(bar) </pre> </div> <br /> </div> <div class="five wide column"> <div class='ui vertical fluid menu'> <div class='item only-desktop'> <ins class="adsbygoogle" style="display:block;min-width:120px;max-width:300px;width:100%;height:600px" data-ad-client="ca-pub-6535703173049909" data-ad-slot="9724778181" data-ad-format="vertical"></ins> </div> <div class='item only-mobile' style='height: 100px;'>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-6535703173049909" data-ad-slot="4915028187" data-ad-format="auto"></ins> </div> <a class='item' href='/r/'> <h4 class='ui header'> 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modifyList: Recursively Modify Elements of a List