Scheme 48 Manual -- Cells

Scheme 48 Manual | Contents | In Chapter: Libraries
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## Cells

These hold a single value and are useful when a simple indirection is required. The system uses these to hold the values of lexical variables that may be `set!`.

- `(cell? value) -> boolean`
- `(make-cell value) -> cell`
- `(cell-ref cell) -> value`
- `(cell-set! cell value)`

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