<!doctype html public "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>forall/2</title>
<link rel=stylesheet href="../../styles.css" type="text/css">
</head>
<body>
<hr />
<h2><code><a class="back" title="Return to index" href="../index.html#forall2">forall/2</a></code></h2>
<h4>Description</h4>
<blockquote>
<pre>
forall(Generator, Test)
</pre>
<p>
For all solutions of <code>Generator</code>, <code>Test</code> is true.
</p>
</blockquote>
<h4>Template and modes</h4>
forall(+callable, +callable)
<h4>Errors</h4>
<dl>
<dt>Either Generator or Test is a variable:</dt>
<dd><code>instantiation_error</code></dd>
<dt>Generator is neither a variable nor a callable term:</dt>
<dd><code>type_error(callable, Generator)</code></dd>
<dt>Test is neither a variable nor a callable term:</dt>
<dd><code>type_error(callable, Test)</code></dd>
</dl>
<h4>Examples</h4>
<dt>To call both goals in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#this">this</a>:</dt>
<dd><code>forall(Generator, Test)</code></dd>
<dt>To call both goals in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#self">self</a>:</dt>
<dd><code>forall(::Generator, ::Test)</code></dd>
<dt>To call both goals in an object:</dt>
<dd><code>forall(Object::Generator, Object::Test)</code></dd>
<p class="center">
<strong><a href="findall3.html">Previous</a> | <a href="setof3.html">Next</a> | <a href="../index.html">Table of Contents</a> | <a href="../../bibliography.html">Bibliography</a> | <a href="../../glossary.html">Glossary</a></strong>
Last updated on: October 21, 2001
</body>
</html>
