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spec: Further information on tie and creating tied classes can be found in the following Perl documentation pages : perldoc - f tie perldoc perltie perldoc Tie : : Scalar perldoc Tie : : Array perldoc Tie : : Hash perldoc Tie : : Handle One final note : There is a bug in Perl 5.6.1 that sometimes causes a tied variable to be accessed twice when it is interpolated - - that is why in the example above I used ' print $ rand , " \ n " ' instead of the simpler ' print " $ rand \ n " ' . The method is rigorously justifiable in the cases when the system under analysis satisfies the FKG ( Fortuin-Kasteleyn-Ginibre ) property and has a fast decay of correlations . In addition , we considered a number of issues that had been mostly avoided in the past . A comprehensive community prevention strategy must address both onset patterns and ferret out their respective causes and risk factors . Netscape plug-in which is a bit buggy when used with the Mac - - it will probably work fine for viewing the structures shown below , but it sometimes causes some Mac 's to crash when used with complicated web page designs ( for instance , my Mac crashes every time I try to download the " test page " from the Chime home page ) . Because there is no validation of the device reported ID string length in the driver , the driver reads bytes from the device and overwrites kernel memory until the memory corruption causes the computer to stop responding . Treatment may be needed if a rapid heartbeat causes discomfort , decreased energy , or other unacceptable symptoms . If you believe all these people / groups do , then rate them in order of responsibility from most responsible to least . The critical change that must occur is our acknowledgement that drugs rarely cause crime , while money almost always causes crime . Faculty and advanced students pursue new knowledge and educational development along with other scholarly and creative activities . Iceland originally proposed killing 100 sei , 200 fin , and 200 minke whales over the course of a two-year research period .