Assigned: what changed
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Title: Assigned
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| 1 | + | `Assigned` is a [[Function|function]] defined in the [[System unit]] of the [[FPC|Free Pascal]] [[RTL|Runtime Library]]. It is used to determine if certain [[Type|types]] of [[Variable|variables]] have been given a value: | |
| 2 | + | ||
| 3 | + | - [[Pointer|Pointer variables]] | |
| 4 | + | - [[Procedural variable|Procedural variables]] and method procedural variables | |
| 5 | + | - [[Class|Class variables]] | |
| 6 | + | ||
| 7 | + | The `function assigned` receives a [[Boolean|boolean]] value `false` if the type pointer assigned to it indicates a [[Nil|nil]] value | |
| 8 | + | ||
| 9 | + | ``` Pascal | |
| 10 | + | function Assigned( P: Pointer ) : Boolean; | |
| 11 | + | ``` | |
| 12 | + | ||
| 13 | + | ## see also | |
| 14 | + | ||
| 15 | + | - [`Assigned`](https://www.freepascal.org/docs-html/rtl/system/assigned.html) | |
| 16 | + | ||
| 17 | + | --- | |
| 18 | + | *From the Free Pascal wiki, page "Assigned", as it stood on 2022-08-06 after a change by Kai Burghardt, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* |