- Name: perl-Eval-Closure
- Version: 0.40.0
- Release: 1.mga1
- Epoch:
- Group: Development/Perl
- License: GPL+ or Artistic
- Url: http://search.cpan.org/dist/Eval-Closure
- Summary: Safely and cleanly create closures via string eval
- Architecture: noarch
- Size: 17773
- Distribution: Mageia
- Vendor: Mageia.Org
- Packager: Mageia Team <http://www.mageia.org>
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).
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