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<head><title>~ -- a unary postfix operator</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="_operators.html" title="">operators</a> > <a href="_~.html" title="a unary postfix operator">~</a></div>
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<div><h1>~ -- a unary postfix operator</h1>
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<div class="waystouse"><h2>Ways to use <tt>~</tt> :</h2>
<ul><li><span>Module ~, see <span><a href="_sheaf_lp__Module_rp.html" title="make a coherent sheaf">sheaf(Module)</a> -- make a coherent sheaf</span></span></li>
<li><span>Ring ~, see <span><a href="_sheaf_lp__Ring_rp.html" title="make a coherent sheaf of rings">sheaf(Ring)</a> -- make a coherent sheaf of rings</span></span></li>
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<div class="waystouse"><h2>For the programmer</h2>
<p>The object <a href="_~.html" title="a unary postfix operator">~</a> is <span>a <a href="___Keyword.html">keyword</a></span>.</p>
<div><div><p>This operator may be used as a postfix unary operator in an expression like <tt>x ~</tt>. The user may <a href="__co_eq.html">install a method</a> for handling such expressions with code such as</p>
<pre> X ~ := (x) -> ...</pre>
<p>where <tt>X</tt> is the class of <tt>x</tt>.</p>
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