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<head><title>unsequence -- extract the single element from a sequence of length 1</title>
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<div><a href="index.html" title="">Macaulay2Doc</a> > <a href="___The_sp__Macaulay2_splanguage.html" title="">The Macaulay2 language</a> > <a href="_lists_spand_spsequences.html" title="">lists and sequences</a> > <a href="_unsequence.html" title="extract the single element from a sequence of length 1">unsequence</a></div>
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<div><h1>unsequence -- extract the single element from a sequence of length 1</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>unsequence x</tt></div>
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<li><div class="single">Inputs:<ul><li><span><tt>x</tt>, <span>a <a href="___Thing.html">thing</a></span></span></li>
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<li><div class="single">Outputs:<ul><li><span><tt>x#0</tt>, if <tt>x</tt> is a sequence of length 1, otherwise <tt>x</tt></span></li>
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<div class="single"><h2>Description</h2>
<div><table class="examples"><tr><td><pre>i1 : unsequence (2:a)
o1 = (a, a)
o1 : Sequence</pre>
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<tr><td><pre>i2 : unsequence (1:a)
o2 = a
o2 : Symbol</pre>
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<tr><td><pre>i3 : unsequence (0:a)
o3 = ()
o3 : Sequence</pre>
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<div class="single"><h2>See also</h2>
<ul><li><span><a href="_sequence.html" title="make a sequence">sequence</a> -- make a sequence</span></li>
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