• Juanjo Alvarez (7/7) Sep 21 2010 In Python and C# you can define a regex like:
• bearophile (11/15) Sep 21 2010 D2 Phobos is in beta stage still, and I think its regex don't support na...
• Juanjo Alvarez (7/8) Sep 21 2010 for named captured groups, but there are many things to implement and

Juanjo Alvarez <fake fakeemail.com> writes:

"Blabla_(? <year>\d{4}) _BLA

And then if you match that against a string like:

Blabla_1970_BLA

you can get a hash with "year" as key and 1970 as value. Can this be 
done with D regex module? Trying it throws a RegExpException with the 
message "*+?  not allowed in atom"

bearophile <bearophileHUGS lycos.com> writes:

Juanjo Alvarez:


 "Blabla_(? <year>\d{4}) _BLA
 And then if you match that against a string like:
 Blabla_1970_BLA


D2 Phobos is in beta stage still, and I think its regex don't support named
groups yet. So you need to use numbers to select the group you want:

import std.stdio, std.regex;

void main() {
    auto re = regex(r"Blabla_(\d{4})_BLA");
    string test = "Blabla_1970_BLA";
    writeln(match(test, re).front.captures[1]);
}


You may add an enhancement request for Phobos in Bugzilla, asking for named
captured groups, but there are many things to implement and only few people
that implement things, so probably you will have to wait a lot of time :-)

Bye,
bearophile

Juanjo Alvarez <fake fakeemail.com> writes:

On Tue, 21 Sep 2010 16:22:22 -0400, bearophile 
<bearophileHUGS lycos.com> wrote:
 You may add an enhancement request for Phobos in Bugzilla, asking 

for named captured groups, but there are many things to implement and 
only few people that implement things, so probably you will have to 
wait a lot of time :-)

I guessed that was the case when I looked at the code, but had to ask 
anyway, I can live with indexed captures anyway.