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<div><h1>GlobalReleaseHook</h1>
<div class="single"><h2>Description</h2>
<div><tt>GlobalReleaseHook</tt> -- a method name that is consulted when an assignment to a global variable is about to occur.<p/>
The method should be a function of two variables: the symbol to which a value is being assigned, and the old value about to be overwritten. The method should be stored under the name <tt>GlobalReleaseHook</tt> in the class of the old value. It is executed before the assignment occurs, and before the execution of <a href="___Global__Assign__Hook.html" title="hook for assignment to global variables">GlobalAssignHook</a>.<p/>
<table class="examples"><tr><td><pre>i1 : RR.GlobalReleaseHook = (sym,val) -> << concatenate (
"assigning ", toString val, " to ", toString sym
) << endl
o1 = {*Function[stdio:1:33-3:10]*}
o1 : FunctionClosure</pre>
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<tr><td><pre>i2 : a=4.5
o2 = 4.5
o2 : RR (of precision 53)</pre>
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<tr><td><pre>i3 : a=5.4
assigning 4.5 to a
o3 = 5.4
o3 : RR (of precision 53)</pre>
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<div class="single"><h2>See also</h2>
<ul><li><span><a href="___Global__Assign__Hook.html" title="hook for assignment to global variables">GlobalAssignHook</a> -- hook for assignment to global variables</span></li>
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<div class="waystouse"><h2>For the programmer</h2>
<p>The object <a href="___Global__Release__Hook.html" title="">GlobalReleaseHook</a> is <span>a <a href="___Symbol.html">symbol</a></span>.</p>
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