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<head><title>globalAssignment -- install standard global assignment method</title>
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<div><h1>globalAssignment -- install standard global assignment method</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>globalAssignment X</tt></div>
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<li><div class="single">Inputs:<ul><li><span><tt>X</tt>, <span>a <a href="___Type.html">type</a></span></span></li>
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<li><div class="single">Consequences:<ul><li>the functions <a href="_global__Assign__Function.html" title="the standard method for the global assignment hook">globalAssignFunction</a> and <a href="_global__Release__Function.html" title="the standard method for the global variable release hook">globalReleaseFunction</a> are installed in the type <tt>X</tt> under <a href="___Global__Assign__Hook.html" title="hook for assignment to global variables">GlobalAssignHook</a> and <a href="___Global__Release__Hook.html" title="">GlobalReleaseHook</a>, respectively. The effect is that when an object of type <tt>X</tt> is assigned to a global variable, the function <a href="_use.html" title="install or activate object">use</a> is called on it, and thereafter that object will print out as the name of the variable.</li>
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<div class="single"><h2>Description</h2>
<div>One type for which this has been done is <a href="___Ring.html" title="the class of all rings">Ring</a>, as illustrated in the following example.<table class="examples"><tr><td><pre>i1 : S := QQ[x]
o1 = QQ[x]
o1 : PolynomialRing</pre>
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<tr><td><pre>i2 : S
o2 = QQ[x]
o2 : PolynomialRing</pre>
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<tr><td><pre>i3 : S^3
3
o3 = (QQ[x])
o3 : QQ[x]-module, free</pre>
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<tr><td><pre>i4 : R = S
o4 = R
o4 : PolynomialRing</pre>
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<tr><td><pre>i5 : S
o5 = R
o5 : PolynomialRing</pre>
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<tr><td><pre>i6 : S^3
3
o6 = R
o6 : R-module, free</pre>
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