遍历元素 1:foreach 方式
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// QList<outNode*> list; foreach (outNode *i, list) { if (i->sn == tmpNode->sn) { qDebug() << "find in list!"; } } |
2:for 方式
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// QList<outNode*> list; for (int i = 0; i < list.size(); ++i) { outNode *node = (outNode *)list.at(i); if (node->sn == tmpNode->sn) { qDebug() << "find in database!"; list.removeAt(i); // 删除 list.append(tmpNode); // 添加 return; } } |