Difference between revisions of "Loop"
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| − | + | In the [[nodal model]], a [[loop]] is a [[Wikipedia:Linked list#Circularly-linked list|circularly linked list]] formed from nodal [[association]]s. Since none of the [[node]]s in a loop is a starting or finishing point, a loop can be [[node references|referenced]] by ''any'' of its node-items. This means that a reference to a loop can also encapsulate the concept of an item of ''current focus'', a concept used heavily by [[nodal reduction]]. | |
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| + | If a loop is not circularly-linked, then the last item must link to [[root]] and it is called a [[thread]] instead. Threads only rotate once and are then automatically unhooked because every [[quanta]] sent to root is a new quanta. | ||
| − | + | In [[nodal reduction]], a [[node]]'s value (obtained by calling nodeGet/SetValue with the key parameter set to zero) is called the current [[focus]] and it is a [[node]] in the [[loop]]. This node of current-focus is the one which will receive the next [[quantum]] of execution from its parent node, and is part of a loop of nodes which all receive quanta as the loop is rotated by the nodal reduction process. | |
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| − | + | If a loop has static structure, then it can appear in many contexts simultaneously, it's [[association|parent association]] will be dynamically maintained by the [[nodal reduction]] algorithm. | |
| − | + | {{code|[[Image:loop.png]]}} | |
| + | [[Category:Nodal Concepts]] | ||
Latest revision as of 22:41, 26 August 2012
In the nodal model, a loop is a circularly linked list formed from nodal associations. Since none of the nodes in a loop is a starting or finishing point, a loop can be referenced by any of its node-items. This means that a reference to a loop can also encapsulate the concept of an item of current focus, a concept used heavily by nodal reduction.
If a loop is not circularly-linked, then the last item must link to root and it is called a thread instead. Threads only rotate once and are then automatically unhooked because every quanta sent to root is a new quanta.
In nodal reduction, a node's value (obtained by calling nodeGet/SetValue with the key parameter set to zero) is called the current focus and it is a node in the loop. This node of current-focus is the one which will receive the next quantum of execution from its parent node, and is part of a loop of nodes which all receive quanta as the loop is rotated by the nodal reduction process.
If a loop has static structure, then it can appear in many contexts simultaneously, it's parent association will be dynamically maintained by the nodal reduction algorithm.
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