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<meta http-equiv="content-type" content="application/xml+xhtml; charset=utf-8" />
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<title>Logtalk built-in method: forall/2</title>
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2005-12-24 18:00:21 +00:00
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Built-in method: forall/2</div>
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<div class="bottom-left"><span class="page"/></div>
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<div class="bottom-right"><span class="page"/></div>
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<div class="navtop"><a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#methods">built-in methods</a></div>
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<h2 class="codenp">forall/2<span id="methods_forall2"/></h2>
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<h4>Description</h4>
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<pre>forall(Generator, Test)</pre>
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<p>
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For all solutions of <code>Generator</code>, <code>Test</code> is true.
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</p>
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<h4>Template and modes</h4>
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<pre>forall(+callable, +callable)</pre>
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2001-12-05 23:57:48 +00:00
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<h4>Errors</h4>
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<dl>
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<dt>Either Generator or Test is a variable:</dt>
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<dd><code>instantiation_error</code></dd>
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<dt>Generator is neither a variable nor a callable term:</dt>
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<dd><code>type_error(callable, Generator)</code></dd>
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<dt>Test is neither a variable nor a callable term:</dt>
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<dd><code>type_error(callable, Test)</code></dd>
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</dl>
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<h4>Examples</h4>
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<dl>
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<dt>To call both goals in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#this">this</a>:</dt>
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<dd><code>forall(Generator, Test)</code></dd>
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<dt>To call both goals in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#self">self</a>:</dt>
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<dd><code>forall(::Generator, ::Test)</code></dd>
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<dt>To call both goals in an object:</dt>
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<dd><code>forall(Object::Generator, Object::Test)</code></dd>
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</dl>
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<div class="footer">
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2006-11-07 17:11:47 +00:00
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<div class="copyright">
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<span>Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://logtalk.org">Logtalk.org</a></span><br/>
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<span>Last updated on: October 26, 2006</span>
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