What is the meaning "(?" in Regula expressions?

Question 1

Question 2

Open parenthesis sequence , They all begin with two characters like (? always perform some special functionality

(?: ..) : group it but don't capture

(?=...): look ahead

(?<=...) : look behind

GeorgeBell · Answer 1 · 2023-08-15T23:23:22+0000

Open parenthesis sequence , They all begin with two characters like (? always perform some special functionality

(?: ..) : group it but don't capture

(?=...): look ahead

(?<=...) : look behind

What is the meaning "(?" in Regula expressions?

Please log in or register to answer this question.

1 Answer