### NFData Typeclass for Deep Evaluation in Haskell

Source: https://hackage.haskell.org/package/deepseq-1.6.0.0/docs/package/deepseq

The `NFData` typeclass defines strategies for fully evaluating different data types. Instances of `NFData` ensure that a data structure has no unevaluated components after evaluation.

```Haskell
class NFData a where
  rnf :: a -> () -- rnf stands for 'reduce to normal form'
-- Example instance:
-- instance NFData Int where rnf x = x `seq` ()
```

--------------------------------

### Deep Evaluation Function in Haskell

Source: https://hackage.haskell.org/package/deepseq-1.6.0.0/docs/package/deepseq

The `deepseq` function is the primary interface for fully evaluating data structures. It operates on types that implement the `NFData` typeclass, ensuring all components are evaluated.

```Haskell
deepseq :: NFData a => a -> b -> b
-- Example usage:
-- let x = [1..1000000]
-- deepseq x (putStrLn "Evaluated!")
```

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