How can I use regex to match special characters?

How can I use regex to match special characters?

You can use escape sequences in regex to match special characters. For example, to match a dot, use '.'.

What about matching a dollar sign?

To match a dollar sign, you would use '$' in your regex pattern.

Are there any other special characters I should be aware of?

Yes, characters like *, +, ?, ^, and () also have special meanings in regex and need to be escaped.

Can you give me an example of a regex pattern that includes multiple special characters?

Sure! A regex pattern like '^[a-zA-Z0-9_-$&@!]+$' matches strings with letters, numbers, and specific special characters.