Lambda Functions

Sometimes you need a small function for a one-time use. Lambda functions let you define these inline without the ceremony of a full function definition. Anonymous Function Syntax Lambdas with Built-ins Lambdas are powerful but easy to misuse. Keep them short and simple. If the logic needs more than one expression, use a regular function instead. When a lambda grows beyond a single expression, convert it to a named function. Named functions are easier to test, document, and reuse across your codebase.