QRegularExpression

implements Perl-compatible regular expressions. It fully supports Unicode.

QRegExp

is modeled on Perl's regexp language. It fully supports Unicode.

... the new QRegularExpression class ... is recommended in place of QRegExp.

The most valued benefit will come when migrating to Qt 6, where QRegExp requires usage of an additional Core5Compat module.

Instead, all use cases of QRegExp could be ported to QRegularExpression.

Useful skills:

basic C++, Qt, regular expressions

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