QString convert camel case to space separated words

Question

I am trying to convert a camel cased QString into lowercased words separated by spaces. I currently have:

QString camelCase = "thisIsACamelCaseWord"
QString unCamelCase = camelCase.replace(QRegularExpression("([A-Z])", " $1")).toLower();

Which seems to work here ,

"this Is A Camel Case Word"

but it is returning with:

"this $1s $1 $1amel $1ase $1ord"

Answer 1

由于QRegularExpression 使用PRCE ，因此后向引用语法为'\0'、'\1'等，如文档中所述。