The Librarian's Introduction to Programming Languages by Thomsett-Scott Beth;
Author:Thomsett-Scott, Beth; [Thomsett-Scott, Beth]
Language: eng
Format: epub
Publisher: Rowman & Littlefield Unlimited Model
Published: 2016-08-15T00:00:00+00:00
Variable names have some minor rules and some additional best practices. This outline of do-nots can look overly restrictive but, in practice, makes variables more identifiable:
Variable names must only contain uppercase and lowercase letters, numbers, and underscores: $this!sn0tV@lid.
They cannot start with a number: $2bad.
(Best Practice) Names should describe what they do. $time_event_starts = â2020-05-29â.
(Best Practice) Names should not start with an underscore: $_generally_bad.
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