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<h3 class="section">11.10 Commands</h3>
<p>Commands are a special class of functions that only accept string
input arguments. A command can be called as an ordinary function, but
it can also be called without the parentheses like the following example
shows
<pre class="example"> my_command hello world
</pre>
<p class="noindent">which is the same as
<pre class="example"> my_command("hello", "world")
</pre>
<p>The general form of a command call is
<pre class="example"> <var>name</var> <var>arg1</var> <var>arg2</var> ...
</pre>
<p class="noindent">which translates directly to
<pre class="example"> <var>name</var> ("<var>arg1</var>", "<var>arg2</var>", ...)
</pre>
<p>A function can be used as a command if it accepts string input arguments.
To do this, the function must be marked as a command, which can be done
with the <code>mark_as_command</code> command like this
<pre class="example"> mark_as_command name
</pre>
<p class="noindent">where <code>name</code> is the function to be marked as a command.
<p>One difficulty of commands occurs when one of the string input arguments
are stored in a variable. Since Octave can't tell the difference between
a variable name, and an ordinary string, it is not possible to pass a
variable as input to a command. In such a situation a command must be
called as a function.
<!-- ./deprecated/mark_as_command.m -->
<p><a name="doc_002dmark_005fas_005fcommand"></a>
<div class="defun">
— Built-in Function: <b>mark_as_command</b> (<var>name</var>)<var><a name="index-mark_005fas_005fcommand-656"></a></var><br>
<blockquote><p>This function is obsolete and will be removed from a future
version of Octave.
</p></blockquote></div>
<!-- ./deprecated/unmark_command.m -->
<p><a name="doc_002dunmark_005fcommand"></a>
<div class="defun">
— Built-in Function: <b>unmark_command</b> (<var>name</var>)<var><a name="index-unmark_005fcommand-657"></a></var><br>
<blockquote><p>This function is obsolete and will be removed from a future
version of Octave.
</p></blockquote></div>
<!-- ./deprecated/iscommand.m -->
<p><a name="doc_002discommand"></a>
<div class="defun">
— Built-in Function: <b>iscommand</b> (<var>name</var>)<var><a name="index-iscommand-658"></a></var><br>
<blockquote><p>This function is obsolete and will be removed from a future
version of Octave.
</p></blockquote></div>
<!-- ./deprecated/mark_as_rawcommand.m -->
<p><a name="doc_002dmark_005fas_005frawcommand"></a>
<div class="defun">
— Built-in Function: <b>mark_as_rawcommand</b> (<var>name</var>)<var><a name="index-mark_005fas_005frawcommand-659"></a></var><br>
<blockquote><p>This function is obsolete and will be removed from a future
version of Octave.
</p></blockquote></div>
<!-- ./deprecated/unmark_rawcommand.m -->
<p><a name="doc_002dunmark_005frawcommand"></a>
<div class="defun">
— Built-in Function: <b>unmark_rawcommand</b> (<var>name</var>)<var><a name="index-unmark_005frawcommand-660"></a></var><br>
<blockquote><p>This function is obsolete and will be removed from a future
version of Octave.
</p></blockquote></div>
<!-- ./deprecated/israwcommand.m -->
<p><a name="doc_002disrawcommand"></a>
<div class="defun">
— Built-in Function: <b>israwcommand</b> (<var>name</var>)<var><a name="index-israwcommand-661"></a></var><br>
<blockquote><p>This function is obsolete and will be removed from a future
version of Octave.
</p></blockquote></div>
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