Boolean

From Tygron Support wiki
Revision as of 13:40, 28 April 2020 by Rudolf@tygron.nl (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
This article is a stub. You can help Tygron by expanding it.

A boolean is a binary value, indicating either a "true" or a "false".

In general, only a value of 0 or 1 is allowed. Any other value may cause undefined behavior, though as a rule of thumb any positive value is interpreted as "true".

Value Meaning
0 False (No)
1 True (Yes)

Presence

For some functionalities, the presence of an attribute is used, rather than the actual value of that attribute. This is referred to as a "boolean by presence". In these cases, if the attribute is not present, it's considered a logical "False". If the attribute is present, it's considered a logical "True".