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<title>forall/2</title>
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<h2><code><a class="back" title="Return to index" href="../index.html#forall2">forall/2</a></code></h2>
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<h4>Description</h4>
<blockquote>
<pre>
forall(Generator, Test)
</pre>
<p>
For all solutions of <code>Generator</code>, <code>Test</code> is true.
</p>
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<h4>Template and modes</h4>
<blockquote>
<pre>
forall(+callable, +callable)
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<h4>Errors</h4>
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<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>
</blockquote>
<h4>Examples</h4>
<blockquote>
<dl>
<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>
</dl>
</blockquote>
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<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>
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Last updated on: October 21, 2001
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