🛠️ Master Groovy's Closures

Closures in Groovy are anonymous functions that can be assigned to variables and passed around as arguments or returned as values from other functions. They can capture and manipulate the state of their enclosing context and have access to the variables and functions defined in the scope where they are created. They are an essential feature of functional programming in Groovy.

When a closure is declared in Groovy, it creates a new object that has access to the current context and the variables defined in that context. The closure can be assigned to a variable, passed as an argument or returned as a value from a function. When it is called, it executes the code block defined by the closure with its own state. Closures can capture the state of the context where they are created and maintain their own state.