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QStringList list;
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QMap<QString, QString> parse_list;
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-----------------------------
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for (int j = 0; j < list.size(); j++){
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	qDebug() << info_list[i];
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	QMapIterator<QString, QString> i(parse_list);
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	while (i.hasNext()){
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		i.next();
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	}
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}
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все зачипенно
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----------------------------
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for (int j = 0; j < list.size(); j++){
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	QMapIterator<QString, QString> i(parse_list);
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	while (i.hasNext()){
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		i.next();
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	}
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	qDebug() << info_list[i];
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}
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widget.cpp: В функции-члене «void Widget::test(QString)»:
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widget.cpp:505:28: ошибка: no match for «operator[]» in «info_list[i]»
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widget.cpp:505:28: замечание: candidates are:
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In file included from /usr/include/qt4/QtCore/qhash.h:48:0,
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                 from /usr/include/qt4/QtCore/qcache.h:45,
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                 from /usr/include/qt4/QtCore/QtCore:7,
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                 from /usr/include/qt4/QtNetwork/QtNetwork:3,
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                 from widget.h:4,
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                 from widget.cpp:1:
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/usr/include/qt4/QtCore/qlist.h:472:17: замечание: const T& QList<T>::operator[](int) const [with T = wearCarPartInfo]
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/usr/include/qt4/QtCore/qlist.h:472:17: замечание:   no known conversion for argument 1 from «QMapIterator<QString, QString>» to «int»
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/usr/include/qt4/QtCore/qlist.h:476:11: замечание: T& QList<T>::operator[](int) [with T = wearCarPartInfo]
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/usr/include/qt4/QtCore/qlist.h:476:11: замечание:   no known conversion for argument 1 from «QMapIterator<QString, QString>» to «int»