You can split a string into a list of strings using the split() function, and join a list of strings into a single string with an optional separator using QStringList::join(). You can obtain a list of strings from a string list that contain a particular substring or that match a ...
If the match is successful and match is not a null pointer, it also writes the results of the match into the QRegularExpressionMatch object pointed to by match. This function was introduced in Qt 5.1. See also QRegularExpression::match(). ...
1、std::string转QString std::string str = "hello wrold!";
#include <QString> #include <QDebug> int main() { int number = 42; QString formattedString = QString("The answer is %1").arg(number); qDebug() << formattedString; // 输出 "The answer is 42" // 使用 sprintf 样式的格式化 formattedString = QString().sprintf("The answer is %d",...
To sort a string list, use the sort() function. QString list also provides the filter() function which lets you to extract a new list which contains only those strings which contain a particular substring (or match a particular regular expression): QStringList monospacedFonts = fonts.filter(...
目录 一、字符串变成char数组-ToCharArray 二、字符串转换为大小写和不区分大小写比较的方法:ToUpper-ToLower和Equals 三、移除字符串中不想要的内容 Split 四、替换某些字符或字符串-Replace 五、判断字符串中是否包含子字符串-Contains 六、截取字符串-Substring 七、判断字符串是否以某个字符开始和结尾 Go语言学习...
Suppose that we want to extract all the words from a given string, where a word is a substring matching the pattern \w+. QRegularExpression::globalMatch returns a QRegularExpressionMatchIterator, which is a Java-like forward iterator that can be used to iterate over the results. For ...
This function was introduced in Qt 5.12. QStringList QStringList::filter(const QString &str, Qt::CaseSensitivity cs = Qt::CaseSensitive) const Returns a list of all the strings containing the substring str. If cs is Qt::CaseSensitive (the default), the string comparison is case sensitive...
Returns a list of all the strings that match the regular expression rx. QStringList QStringList::filter ( const QString & str, Qt::CaseSensitivity cs = Qt::CaseSensitive ) const Returns a list of all the strings containing the substring str. If cs is Qt::CaseSensitive (the default...
If you want to replace all occurrences of a particular substring with another, use one of the two-parameter replace() overloads.A frequent requirement is to remove whitespace characters from a string ('\n', '\t', ' ', etc.). If you want to remove whitespace from both ends of a Q...