Kleene star

Okay kiddo, have you ever seen the symbol that looks like a little star? That's called the Kleene Star! It might sound a little confusing, but it's actually pretty simple.

The Kleene Star is used in something called regular expressions, which are just a fancy way of writing patterns that we might see in things like email addresses or phone numbers. It tells us to repeat whatever comes before it zero or more times.

So let's say we have the letter "a". If we put a Kleene Star after it, like this: "a*", it means we can have zero or more "a's". So "a*", could be just "a", or it could be "aa", or even "aaaaaaaaa".

We can use the Kleene Star with other letters too, like "b" or "c". And we can use it with more complex patterns too, like "(ab)*", which means we can have zero or more instances of the sequence "ab". So we could have "abab", "ababab", or even just "ab".

Overall, the Kleene Star is just a useful tool for repeating patterns in regular expressions, making it easier for us to find and match certain pieces of text.