check_class

Check if argument is of proper class.

internal

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Streamlined Interface to Interact with Cloud Storage Platforms

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Gradient Metrics 

check_class function

<dl><dt>x</dt>
<dd>Function argument that is being asserted.</dd>
<dt>arg_class</dt>
<dd>Class name. Usually "character", "numeric", "data.frame",
etc.</dd>
<dt>alt_null</dt>
<dd>Logical. Should argument accept NULL value.</dd>
<dt>add_msg</dt>
<dd>Is an additional message that can be printed over the standard
function error message. You can:<ul>
<li>pass the names of the arguments that failed the test by using
<code>{x_names}</code> in the message body (e.g. "What are the {x_names}");</li>
<li>pass the tested class by using <code>{arg_class}</code> in the message body (e.g.
"I want them to be {arg_class})"</li>
<li>pass the classes of the arguments that failed the test by using
<code>{wrong_class}</code> in the message body (e.g. "{wrong_class} is wrong")</li>
</ul></dd></dl>

Arguments

Check Argument's Class — check_class

<dl>

<dt>x</dt>
<dd>Function argument that is being asserted.</dd>


<dt>arg_class</dt>
<dd>Class name. Usually "character", "numeric", "data.frame",
etc.</dd>


<dt>alt_null</dt>
<dd>Logical. Should argument accept NULL value.</dd>


<dt>add_msg</dt>
<dd>Is an additional message that can be printed over the standard
function error message. You can:<ul>
<li>pass the names of the arguments that failed the test by using
<code>{x_names}</code> in the message body (e.g. "What are the {x_names}");</li>
<li>pass the tested class by using <code>{arg_class}</code> in the message body (e.g.
"I want them to be {arg_class})"</li>
<li>pass the classes of the arguments that failed the test by using
<code>{wrong_class}</code> in the message body (e.g. "{wrong_class} is wrong")</li>
</ul></dd>

</dl>

check_class: Check Argument's Class

Description

Usage

Value

Arguments