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Issue 15.5 ('Touch Bar')
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FEATURE

Improve WeakRef Performance

Cache WeakRefs to gain speed

Issue: 15.5 (September/October 2017)
Author: Thomas Tempelmann
Author Bio: Thomas is a long-time Xojo developer. This article is an updated version of a post that originally appeared on his website (http://blog.tempel.org).
Article Description: No description available.
Article Length (in bytes): 8,937
Starting Page Number: 13
Article Number: 15503
Related Web Link(s):

http://blog.tempel.org
http://developer.xojo.com/userguide/weak-references

Excerpt of article text...

A common programming technique to organize data is the use of tree structures, which are built as linked lists. Trees are great for hierarchical data, such as files and folders. (See the What's a Linked List? sidebar for more info.)

But the traditional structure of building trees with leaves (children) that keep a reference to the branch (ancestor, parent) they're attached to, can cause some serious problems. The simplest—but not smartest—solution is to store a direct reference to the parent object in the child object.

Imagine this node class:

class Person

property name as String

...End of Excerpt. Please purchase the magazine to read the full article.