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java.lang.Object | +----Acme.RefDouble
Used to pass doubles to methods by reference, so they can be modified. You can't use the standard Integer/Long/Float/Double classes for this, because they are immutable - the number they represent can't be changed once the object is created. With these Ref classes, on the other hand, you can change the value all you want
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public double val
public RefDouble()RefDouble
public RefDouble(double val)
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