Add new file

b6929d95 · 刘汉章 · dc7cfcf9 · b6929d95
Commit b6929d95 authored Jan 27, 2021 by 刘汉章
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QMap
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--- a/QMap
+++ b/QMap
+#include <QCoreApplication>
+#include <QDebug>
+int main(int argc, char *argv[])
+{
+    QCoreApplication a(argc, argv);
+    QMap<QString,QString> map;
+    map.insert("beijing","111");
+    map.insert("shanghai","021");
+    map.insert("nanjing","025");
+    QMapIterator<QString,QString> i(map);
+    for(;i.hasNext();)
+        qDebug()<<" "<<i.key()<<" "<<i.next().value();
+    QMutableMapIterator<QString,QString> mi(map);
+    if(mi.findNext("111"))
+        mi.setValue("010");
+    QMutableMapIterator<QString,QString> modi(map);
+    qDebug()<<" ";
+    for(;modi.hasNext();)
+        qDebug()<<" "<<modi.key()<<" "<<modi.next().value();
+    return a.exec();
+}