-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2011-5664 2011-04-20 18:59:20 --------------------------------------------------------------------------------
Name : perl-Eval-Closure Product : Fedora 13 Version : 0.04 Release : 1.fc13 URL : http://search.cpan.org/dist/Eval-Closure/ Summary : Safely and cleanly create closures via string eval Description : String eval is often used for dynamic code generation. For instance, Moose uses it heavily, to generate inlined versions of accessors and constructors, which speeds code up at runtime by a significant amount. String eval is not without its issues however - it's difficult to control the scope it's used in (which determines which variables are in scope inside the eval), and it can be quite slow, especially if doing a large number of evals.
This module attempts to solve both of those problems. It provides an eval_closure function, which evals a string in a clean environment, other than a fixed list of specified variables. It also caches the result of the eval, so that doing repeated evals of the same source, even with a different environment, will be much faster (but note that the description is part of the string to be evaled, so it must also be the same (or non-existent) if caching is to work properly).
-------------------------------------------------------------------------------- Update Information:
This update avoids the use of Memoize - it apparently doesn't work properly under mod_perl in some situations. --------------------------------------------------------------------------------
This update can be installed with the "yum" update program. Use su -c 'yum update perl-Eval-Closure' at the command line. For more information, refer to "Managing Software with yum", available at http://docs.fedoraproject.org/yum/.
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