In R, the concept of a function within a function that retains access to the environment it was created in is called a ________.
- Nested function
- Closure
- Callback function
- Higher-order function
In R, the concept of a function within a function that retains access to the environment it was created in is called a closure. Closures are created when a nested function is defined within another function and can access the variables and objects in the parent function's environment even after the parent function has finished executing.
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