13 lines
624 B
Text
13 lines
624 B
Text
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Most programmers who use Perl's object-oriented features construct their
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objects by blessing a hash. But, in doing so, they undermine the
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robustness of the OO approach. Hash-based objects are unencapsulated:
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their entries are open for the world to access and modify.
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Objects without effective encapsulation are vulnerable. Instead of
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politely respecting their public interface, some clever client coder
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inevitably will realize that it's marginally faster to interact directly
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with the underlying implementation, pulling out attribute values
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directly from the hash of an object.
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WWW: http://search.cpan.org/dist/Class-Std/
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