ad4f267b7a
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16 lines
965 B
Text
16 lines
965 B
Text
String eval is often used for dynamic code generation. For instance, Moose uses
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it heavily, to generate inlined versions of accessors and constructors, which
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speeds code up at runtime by a significant amount. String eval is not without
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its issues however - it's difficult to control the scope it's used in (which
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determines which variables are in scope inside the eval), and it can be quite
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slow, especially if doing a large number of evals.
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This module attempts to solve both of those problems. It provides an
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eval_closure function, which evals a string in a clean environment, other than
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a fixed list of specified variables. It also caches the result of the eval, so
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that doing repeated evals of the same source, even with a different
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environment, will be much faster (but note that the description is part of the
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string to be evaled, so it must also be the same (or non-existent) if caching
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is to work properly).
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WWW: https://metacpan.org/release/Eval-Closure
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