But it's not always so simple. As real needs arise, finding more complex string patterns can be a lot more difficult. Special characters might be needed, among other things. So, let’s begin working our way through a few examples to explain the basic regular expression syntax.
It’s very useful to represent that a string must start with a specific character or many of them, and end with another. That’s known as string anchoring. For anchoring strings, a caret (^) may be used to indicate the beginning of a string. A dollar sign ($) is used to indicate the end.
Using anchoring characters: