to_s

        # Fiddle::CStructEntity.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


(from ruby core)
### Implementation from Object
---
    obj.to_s    -> string

---

Returns a string representing *obj*. The default #to_s prints the
object's class and an encoding of the object id. As a special case, the
top-level object that is the initial execution context of Ruby programs
returns ``main''.