Regular Expression for matching parentheses

Question

What is the regular expression for matching \'(\' in a string?

Following is the scenario :

I have a string

str = \"abc(efg)\";

Answer 1

Because ( is special in regex, you should escape it \( when matching. However, depending on what language you are using, you can easily match ( with string methods like index() or other methods that enable you to find at what position the ( is in. Sometimes, there's no need to use regex.