摘要：
Behind the scenes, QString uses implicit sharing (copy-on-write) to reduce memory usage and to avoid the needless copying of data.QVector也是隐式数据共享的;虽然文 阅读全文
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摘要：
Behind the scenes, QString uses implicit sharing (copy-on-write) to reduce memory usage and to avoid the needless copying of data.QVector也是隐式数据共享的;虽然文 阅读全文
|