Julien Danjou • 1/11/2013

Overriding cl-json object encoding

This technical article explains a problem where the CL-JSON library incorrectly encodes PostgreSQL NULL values (represented as the :null symbol) from Postmodern DAO objects as the string "null". It provides a detailed solution by defining a custom `encode-json` method for specific CLOS classes to ensure proper JSON serialization, demonstrating Common Lisp's extensibility.

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#json #Common Lisp #Cl JSON