variables is regexp

[Manlio Perillo]

Hi.
It would be nice to have the possibility to define variables inside
regexp.

Ad example:
(?$identifier=regexp) for defining variables
(?$identifier) for accessing variables.


Thanks and regards Manlio Perillo

 

[Richie Hindle]

[Manlio]

It would be nice to have the possibility to define variables inside
regexp.

Ad example:
(?$identifier=regexp) for defining variables
(?$identifier) for accessing variables.

You can, using (?P<name>regex) to define them and (?P=name) to access them.
Here's my favourite example of regular expression abuse, using them to find
prime numbers:
2
3
5
7
11
....