Updated to show how value and pointer types can coexist: https://gist.github.com/pervognsen/77c92814df2f2b1520a87c755ec71142 …
These tagged values can contain paths to achieve "mutating" a value deep in an immutable container by swapping its root.
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These tagged values can contain paths to achieve "mutating" a value deep in an immutable container by swapping its root.