Regular Expressions Reference a named capture group


Example

As you may (or not) know, you can reference a capture group with:

$1

1 being the group number.

In the same way, you can reference a named capture group with:

${name}
\{name}
g\{name}

Let's take the preceding example and replace the matches with

The hero of the story is a ${subject}.

The result we will obtain is:

The hero of the story is a pretty little girl. 
The hero of the story is a unicorn with an hat. 
The hero of the story is a boat with a pirate flag.