40 lines
2.5 KiB
HTML
40 lines
2.5 KiB
HTML
<html><head><object type="application/x-oleobject" classid="clsid:1e2a7bd0-dab9-11d0-b93a-00c04fc99f9e">
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<param name="Keyword" value="Take">
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<param name="Keyword" value="TakeWhile">
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<param name="Keyword" value="Skip">
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<param name="Keyword" value="SkipWhile">
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</object><meta http-equiv="Content-Type" content="text/html; charset=windows-1251"><title></title><link rel="StyleSheet" href="../../../default.css"></head>
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<body>
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<H1>Ìåòîäû Take, TakeWhile, Skip, SkipWhile</H1><h2>Îïèñàíèå ìåòîäîâ</h2><p>Ìåòîäû ïðèâåäåíû äëÿ ïîñëåäîâàòåëüíîñòè <code><b>sequence of</b> T</code>.</p><table>
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<tr><td>
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<code><b>function </b>Take(count: integer): <b>sequence of</b> T;</code>
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<br> Âîçâðàùàåò ïîñëåäîâàòåëüíîñòü èç count ýëåìåíòîâ ñ íà÷àëà ïîñëåäîâàòåëüíîñòè.
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</td></tr>
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<tr><td>
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<code><b>function </b>TakeWhile(predicate: T->boolean): <b>sequence of</b> T;</code>
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<br> Âîçâðàùàåò öåïî÷êó ýëåìåíòîâ ïîñëåäîâàòåëüíîñòè, óäîâëåòâîðÿþùèõ óêàçàííîìó óñëîâèþ, äî ïåðâîãî íå óäîâëåòâîðÿþùåãî.
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</td></tr>
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<tr><td>
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<code><b>function </b>TakeWhile(predicate: (T,integer)->boolean): <b>sequence of</b> T;</code>
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<br> Âîçâðàùàåò öåïî÷êó ýëåìåíòîâ ïîñëåäîâàòåëüíîñòè, óäîâëåòâîðÿþùèõ óêàçàííîìó óñëîâèþ, äî ïåðâîãî íå óäîâëåòâîðÿþùåãî (ó÷èòûâàåòñÿ èíäåêñ ýëåìåíòà).
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</td></tr>
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<tr><td>
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<code><b>function </b>Skip(count: integer): <b>sequence of</b> T;</code>
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<br> Ïðîïóñêàåò count ýëåìåíòîâ â ïîñëåäîâàòåëüíîñòè è âîçâðàùàåò îñòàëüíûå ýëåìåíòû.
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</td></tr>
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<tr><td>
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<code><b>function </b>SkipWhile(predicate: T->boolean): <b>sequence of</b> T;</code>
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<br> Ïðîïóñêàåò ýëåìåíòû â ïîñëåäîâàòåëüíîñòè, ïîêà îíè óäîâëåòâîðÿþò çàäàííîìó óñëîâèþ, è çàòåì âîçâðàùàåò îñòàâøèåñÿ ýëåìåíòû.
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</td></tr>
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<tr><td>
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<code><b>function </b>SkipWhile(predicate: (T,integer)->boolean): <b>sequence of</b> T;</code>
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<br> Ïðîïóñêàåò ýëåìåíòû â ïîñëåäîâàòåëüíîñòè, ïîêà îíè óäîâëåòâîðÿþò çàäàííîìó óñëîâèþ, è çàòåì âîçâðàùàåò îñòàâøèåñÿ ýëåìåíòû (ó÷èòûâàåòñÿ èíäåêñ ýëåìåíòà).
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</td></tr>
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</table>
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<h2>Ïðèìåð </h2><blockquote><code><strong>begin<br> var</strong> a :=
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Arr(1,2,3,4,5,6);<br> a.Take(3).Println; // 1 2 3<br> a.Skip(3).Println;
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// 4 5 6<br> a.Skip(2).Take(3).Println; // 3 4 5<br> a.TakeWhile(x
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-> x<3).Println; // 1 2
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<br> a.SkipWhile(x -> x<5).Println; // 5 6<br><strong>end</strong>.</code></blockquote>
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</body>
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