Hey! 😄. Lets play with Regular Expressions

I bet 😉 this will be the funniest activity you had in years, and you’ll fall in 💘 with it.

Regular expressions (regex) are sequences of characters that define a search pattern. They are used to match strings within other strings, extract information, and perform text manipulation. A regex engine interprets these patterns and applies them to text data.

Following are some key components of regular expressions:

1. Literals: These are the exact text characters or digits you want to match. For example, a or 5.

2. Metacharacters: Symbols with special meanings that help build your regex. Examples include . (matches any single character), ^ (matches the start of a string), and $ (matches the end of a string).

3. Character Classes: Denoted by square brackets [], these match any one of the characters inside them. For example, [abc] matches any single a, b, or c.

4. Quantifiers: Specify how many instances of a character or group are required for a match. For instance, * (0 or more), + (1 or more), ? (0 or 1), and {n} (exactly n times).

• Parts of a Regular Expression
  • Literals

So let’s get started 🚀.