QRegularExpressionMatchIterator ¶

概要 ¶

详细描述 ¶

A QRegularExpressionMatchIterator object is a forward only Java-like iterator; it can be obtained by calling the globalMatch() function. A new QRegularExpressionMatchIterator will be positioned before the first result. You can then call the hasNext() function to check if there are more results available; if so, the next() function will return the next result and advance the iterator.

每个结果是 QRegularExpressionMatch 对象，保持结果的所有信息 (包括捕获子字符串)。

例如：

// extracts the words
QRegularExpression re("(\\w+)");
QString subject("the quick fox");
QRegularExpressionMatchIterator i = re.globalMatch(subject);
while (i.hasNext()) {
    QRegularExpressionMatch match = i.next();
    // ...
}
											

Moreover, QRegularExpressionMatchIterator offers a peekNext() function to get the next result without advancing the iterator.

可以检索 QRegularExpression object the subject string was matched against by calling the regularExpression() function; the match type and the match options are available as well by calling the matchType() 和 matchOptions() 分别。

请参考 QRegularExpression 文档编制，了解有关 Qt 正则表达式类的更多信息。

另请参阅

QRegularExpression QRegularExpressionMatch

class QRegularExpressionMatchIterator ¶

QRegularExpressionMatchIterator(iterator)

param iterator

QRegularExpressionMatchIterator

Constructs an empty, valid QRegularExpressionMatchIterator object. The regular expression is set to a default-constructed one; the match type to NoMatch and the match options to NoMatchOption .

援引 hasNext() member function on the constructed object will return false, as the iterator is not iterating on a valid sequence of matches.

构造 QRegularExpressionMatchIterator object as a copy of iterator .

另请参阅

operator=()

PySide2.QtCore.QRegularExpressionMatchIterator. hasNext ( ) ¶

返回类型

bool

返回 true if there is at least one match result ahead of the iterator; otherwise it returns false .

另请参阅

next()

PySide2.QtCore.QRegularExpressionMatchIterator. isValid ( ) ¶

返回类型

bool

返回 true if the iterator object was obtained as a result from the globalMatch() function invoked on a valid QRegularExpression 对象；返回 false 若 QRegularExpression was invalid.

另请参阅

globalMatch() isValid()

PySide2.QtCore.QRegularExpressionMatchIterator. matchOptions ( ) ¶

返回类型

MatchOptions

Returns the match options that were used to get this QRegularExpressionMatchIterator object, that is, the match options that were passed to globalMatch() .

另请参阅

globalMatch() regularExpression() matchType()

PySide2.QtCore.QRegularExpressionMatchIterator. matchType ( ) ¶

返回类型

MatchType

Returns the match type that was used to get this QRegularExpressionMatchIterator object, that is, the match type that was passed to globalMatch() .

另请参阅

globalMatch() regularExpression() matchOptions()

PySide2.QtCore.QRegularExpressionMatchIterator. next ( ) ¶

返回类型

QRegularExpressionMatch

Returns the next match result and advances the iterator by one position.

注意

Calling this function when the iterator is at the end of the result set leads to undefined results.

PySide2.QtCore.QRegularExpressionMatchIterator. peekNext ( ) ¶

返回类型

QRegularExpressionMatch

Returns the next match result without moving the iterator.

注意

Calling this function when the iterator is at the end of the result set leads to undefined results.

PySide2.QtCore.QRegularExpressionMatchIterator. regularExpression ( ) ¶

返回类型

QRegularExpression

返回 QRegularExpression object whose globalMatch() function returned this object.

另请参阅

globalMatch() matchType() matchOptions()

PySide2.QtCore.QRegularExpressionMatchIterator. swap ( other ) ¶

参数

other – QRegularExpressionMatchIterator

Swaps the iterator other with this iterator object. This operation is very fast and never fails.