qt QString的Split方法（字符串被某个字符拆分成集合）


qt QString的Split方法（字符串被某个字符拆分成集合）

今天想在数据库存储一组数据，因为数组的长度不是固定的，所以想存的时候是否可以存字符串，然后用固定的“，”隔开存储，取值的时候再使用split(",")取值，尝试后可取，代码如下：

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void MainWindow::strSplit()
{
    QString str = "0,1,2,3,4,5,6,7,8,9";
    QStringList  strs=  str.split(",");
    foreach (QString s, strs)
    {
       int n =  s.toFloat();
       qDebug() << n;
    }
}

按F1后查看帮助：

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Splits the string into substrings wherever sep occurs, and returns the list of those strings. If sep does not match anywhere in the string, split() returns a single-element list containing this string.
cs specifies whether sep should be matched case sensitively or case insensitively.
If behavior is QString::SkipEmptyParts, empty entries don't appear in the result. By default, empty entries are kept.
Example:

  QString str = "a,,b,c";

  QStringList list1 = str.split(',');
  // list1: [ "a", "", "b", "c" ]

  QStringList list2 = str.split(',', QString::SkipEmptyParts);
  // list2: [ "a", "b", "c" ]

See also QStringList::join() and section().

希望可以帮助 ， 谢谢观看~~