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to_s 

        # Fiddle::Pointer.to_s

(from ruby core)
### Implementation from Pointer
---
    ptr.to_s        => string
    ptr.to_s(len)   => string

---

Returns the pointer contents as a string.

When called with no arguments, this method will return the contents
until the first NULL byte.

When called with `len`, a string of `len` bytes will be returned.

See to_str

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