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rex
1 parent 000992b commit 8117572

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void prepend(T e) {
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Itm* newHead = new Itm(e);
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newHead->suc = head;
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#if Ring
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if (empty())
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last = head;
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-#endif
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last->suc = newHead;
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+#endif
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#if DoubleLink
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+ if (head) {
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- head->prev = head;
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+ head->prev = newHead;
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+ }
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#if Ring
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newHead->prev = last;
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#endif
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#endif
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head = newHead;
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}

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