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71 lines
2.4 KiB
HTML
71 lines
2.4 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<title>Logtalk built-in predicate: set_logtalk_flag/2</title>
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Built-in predicate: set_logtalk_flag/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#builtins">built-in predicates</a></div>
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<h2 class="codenp">set_logtalk_flag/2<span id="builtins_set_logtalk_flag2"/></h2>
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<h4>Description</h4>
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<pre>set_logtalk_flag(Flag, Value)</pre>
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<p>
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Sets Logtalk flag values.
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</p>
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<h4>Template and modes</h4>
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<pre>set_logtalk_flag(+atom, +atom)</pre>
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<h4>Errors</h4>
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<dl>
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<dt>Flag is a variable:</dt>
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<dd><code>instantiation_error</code></dd>
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<dt>Value is a variable:</dt>
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<dd><code>instantiation_error</code></dd>
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<dt>Flag is not an atom:</dt>
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<dd><code>type_error(atom, Flag)</code></dd>
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<dt>Flag is neither a variable nor a valid flag:</dt>
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<dd><code>domain_error(valid_flag, Flag)</code></dd>
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<dt>Value is not a valid value for flag Flag:</dt>
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<dd><code>domain_error(valid_flag_value, Value)</code></dd>
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<dt>Flag is a read-only flag:</dt>
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<dd><code>permission_error(modify, read_only_flag, Flag)</code></dd>
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</dl>
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<h4>Examples</h4>
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<pre>| ?- set_logtalk_flag(xml, on).</pre>
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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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