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Article contents:[[tags: manual]] [[toc:]] == Module (chicken plist) As in other Lisp dialects, CHICKEN supports "property lists" associated with symbols. Properties are accessible via a key that can be any kind of value but which will be compared using {{eq?}}. === get <procedure>(get SYMBOL PROPERTY [DEFAULT])</procedure> Returns the value stored under the key {{PROPERTY}} in the property list of {{SYMBOL}}. If no such property is stored, returns {{DEFAULT}}. The {{DEFAULT}} is optional and defaults to {{#f}}. === put! <procedure>(put! SYMBOL PROPERTY VALUE)</procedure> <procedure>(set! (get SYMBOL PROPERTY) VALUE)</procedure> Stores {{VALUE}} under the key {{PROPERTY}} in the property list of {{SYMBOL}} replacing any previously stored value. === remprop! <procedure>(remprop! SYMBOL PROPERTY)</procedure> Deletes the first property matching the key {{PROPERTY}} in the property list of {{SYMBOL}}. Returns {{#t}} when a deletion performed, and {{#f}} otherwise. === symbol-plist <procedure>(symbol-plist SYMBOL)</procedure> <procedure>(set! (symbol-plist SYMBOL) LST)</procedure> Returns the property list of {{SYMBOL}} or sets it. The property list is a flat list of alternating properties and values. This list is not guaranteed to be a fresh copy, so avoid mutating it directly. === get-properties <procedure>(get-properties SYMBOL PROPERTIES)</procedure> Searches the property list of {{SYMBOL}} for the first property with a key in the list {{PROPERTIES}}. Returns 3 values: the matching property key, value, and the tail of property list after the matching property. When no match found all values are {{#f}}. This tail of the property list is not guaranteed to be a fresh copy, so avoid mutating it directly. {{PROPERTIES}} may also be an atom, in which case it is treated as a list of one element. --- Previous: [[Module (chicken platform)]] Next: [[Module (chicken port)]] Description of your changes:

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