10 months ago

“The primary feature for easy maintenance is locality: Locality is that characteristic of source code that enables a programmer to understand that source by looking at only a small portion of it.” Locality of Behaviour is the principle that: The behaviour of a unit of code should be as obvious as possible by looking only at that unit of code #discussionDiscussion The LoB principle is a simple prescriptive formulation of the quoted statement from https://www.dreamsongs.com. In as much as it is possible, and in balance with other concerns, developers should strive to make the behaviour of a code element obvious on inspection.

In the former, the behaviour of the button element is obvious on inspection, satisfying the LoB principle.