Halo

Extension

Description

Halo is a singleton class that keeps a global Library where objects can put their halos. Halo content can be organized as lists of keys that access objects. Typical things to keep in halos would be specs for JITLib proxies; or categories and tags that can be used to select objects based on informed criteria.

Caveat: This may be problematic for garbage collection, as it may keep objects around that would become unreachable otherwise. Thus, Halo is intended only for use with semi-permanent objects!

Also note: Usually, one never talks to Halo directly except for debugging. Instead, one uses the object itself to store things into its halo, as shown in the examples. // object 'a' a = 12; a.addHalo(\otto, 234); a.addHalo(\ada, \bebe, 123); a.getHalo; a.getHalo( \otto) a.getHalo(\ada) a.getHalo(\ada, \bebe) // internal Halo.lib; Halo.at(a); Halo.postTree; // special Halo-related method addSpec / getSpec // one can add and get specs, e.g. for Ndefs, Tdefs, Pdefs a.addSpec(\myfreak, [66.6, 666, \exp]); a.addSpec(\amp, [0, 4, \amp]); a.getSpec(\amp); a.getSpec(\pan); // get defaults from Spec.specs if missing in halo a.getSpec Halo.at(a, \spec); Ndef(\a).addSpec(\myfreak, [66.6, 666, \exp]); Ndef(\a).addSpec(\amp, [0, 4, \amp]); Ndef(\a).getSpec NdefGui ... should use Ndef's Halo! // add tags for semantic clouds; // can be weighted (default weight is 1) a.addTag(\kewl); a.addTag(\poor); a.addTag(\kwaizy, 3); a.getTag; a.getTag(\poor); // add categories for searching, can have weights also a.addCat(\num); a.addCat(\even); a.addCat(\small); a.getCat;

Class Methods

.put

.at

.postTree