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:
- Literals: These are the exact text characters or digits you want to match. For example, a or 5.
- 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).
- 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.
- 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).
curriculum/index
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