is_null_xptr

Check if the external pointer is null.

There is limited native support for external pointers in the R interface.
This package provides some basic tools to verify, create and modify 'externalptr' objects.

Dirk Eddelbuettel

xptr

Manipulating External Pointers

Randy Lai

is_null_xptr function

<dl><dt>s</dt>
<dd>An <code>externalptr</code> object</dd></dl>

Arguments

Check if the external pointer is null. — is_null_xptr

<dl>

<dt>s</dt>
<dd>An <code>externalptr</code> object</dd>

</dl>

is_null_xptr: Check if the external pointer is null.

Description

Usage

Value

Arguments