Delphi FAQ - download pdf or read online

By Mike Orriss

Книга Delphi FAQ Delphi FAQ Книги Delphi0 (голосов: zero) Оценка:Этот документ составлен по материалам форумов программистовФормат: chmРазмер: 2.7 MB

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Delphi, òî ó Âàñ åñòü äâà ïóòè: Èñïîëüçîâàòü êîíòåéíåð TList, êîòîðûé ñîäåðæèò óêàçàòåëè.  ýòîì ñëó÷àå Âàì ïðèéä¸òñÿ âñ¸ âðåìÿ äåëàòü ÿâíîå ïðèâåäåíèå òèïîâ. Ñäåëàòü ïîäêëàññ êîíòåéíåðà TCollection èëè TObjectList, è óáðàòü âñå ìåòîäû, çàâèñÿùèå îò òèïîâ êàæäûé ðàç, êîãäà Âû çàõîòèòå èñïîëüçîâàòü íîâûé òèï äàííûõ. Òðåòèé âàðèàíò, ýòî ñäåëàòü ìîäóëü ñ óíèâåðñàëüíûì êëàññîì êîíòåéíåðà, è êàæäûé ðàç, êîãäà íóæíî èñïîëüçîâàòü íîâûé òèï äàííûõ, íàì ïðèéä¸òñÿ â ðåäàêòîðå èñêàòü è âíîñèòü èñïðàâëåíèÿ.

De/dpool Êàê ïîëó÷èòü çíà÷åíèå ñâîéñòâà â âèäå âàðèàíòà ïî òåêñòó èìåíè ñâîéñòâà? PropCount * SizeOf(PPropInfo)); end; end; 49 50 end. de/dpool Êàê ïðî÷èòàòü âåñü ñïèñîê Published ìåòîäîâ? procedure EnumMethods( aClass: TClass; lines: TStrings ); type TMethodtableEntry = packed Record len: Word; adr: Pointer; name: ShortString; end; {Note: name occupies only the size required, so it is not a true shortstring! de/dpool Êàê ïîëó÷èòü ñïèñîê âñåõ published ñâîéñòâ (èìåíà è òèïû)? Kind of tkInteger: tkMethod: tkClass: ...

Pas: unit FloatVectorUnit; interface uses Classes; // !!! Ìîäóëü "Classes" ñîäåðæèò îáúÿâëåíèå êëàññà TInterfacedObject type _VECTOR_DATA_TYPE_ = Double; // !!! òèï äàííûõ äëÿ êëàññà ìàññèâà Double {$INCLUDE TemplateVectorInterface} IFloatVector = _VECTOR_INTERFACE_; // !!! give the interface a meanigful name TFloatVector = _VECTOR_CLASS_; // !!! give the class a meanigful name function CreateFloatVector (const aLength : Integer = 0) : IFloatVector; // !!!

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Delphi FAQ by Mike Orriss


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