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Runtime Type Information (RTTI)/ru

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Информация времени выполнения (RTTI) может быть использована для получения мета-данных в приложениях Pascal.

Преобразование перечислимого типа в строку

Можно использовать RTTI для получения строки из перечисляемого типа.

pascal
type
  TProgrammerType = (tpDelphi, tpVisualC, tpVB, tpJava) ;

uses TypInfo;

var 
  s: string;
begin
  s := GetEnumName(TypeInfo(TProgrammerType), integer(tpDelphi));
  // Здесь s = 'tpDelphi'

Вы также можете сделать это, без использования RTTI:

pascal
program noRTTI;
type
  TProgrammerType = (tpDelphi, tpVisualC, tpVB, tpJava) ; 
var 
  s: string;
begin
  writestr(s,tpDelphi);
  writeln(s);
end.

См. также


From the Free Pascal wiki, page "Runtime Type Information (RTTI)/ru", as it stood on 2020-02-25 after a change by Trev, 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.

Revision 1, last changed by WikiArchive .

Edited on wiki.freepascal.org by 3 people, 2014–2020

From the official wiki's backup of 26 May 2024: who edited this page there, and when. Edits made there after that date were not recorded, and the earlier versions are not shown here; the main page says why.

WhenWhoWhat changed
AmberCreated page
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FTurtlecategory (minor)
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TrevFixed syntax highlighting; removed categories included in template (minor)

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