how to using split method?

[dangdkhanh]

Hi, Is there any way to use matcher.split() but for groups instead match,

Thanks you.

[genivia-inc]

Grouping support in the Matcher class is limited to outer closing (...). You want to use the PerlMatcher to perform grouping. Or what is your question, exactly?

[dangdkhanh]

Hi, can I make matcher.split() work in this case? The code I'm using is as follows:

    reflex::PCRE2Matcher matcher("brown(\\d+)", "How now45 brown cow now brown123 cow now brown378.");
    while (matcher.split() != 0)
    std::cout << "Found " << matcher.text() << std::endl;

my expected result is: "How now45 brown cow now brown"
" cow now brown378."

[genivia-inc]

You will get:

Found How now45 brown cow now 
Found  cow now 
Found .

because both brown123 and brown378 are the "split points" that match the pattern. Split returns text between the pattern matches.

[dangdkhanh]

hi @genivia-inc genivia, my omission, so my expected result is: How now45 brown cow now brown cow now brown I mean there is one more option separated by group in match which is (\d+)

[genivia-inc]

That's not how splitting works. Remember that split returns the text between the pattern matches. The pattern is brown(\\d+) which matches brown123 and brown378. To split on numbers only, use the pattern \\d+. To split on numbers only after the word brown, use perl matching with a so-called lookbehind pattern to also match brown but not consume it as part of the pattern.

[dangdkhanh]

Hi @genivia, please!!! that will make the split more flexible.