Re: cast function, other ideas

Thomas Heller wrote:
> cast(ptr, c_char_p) returns a c_char_p instance, pointing to the same
> address as the ptr instance (an instance of POINTER(c_ubyte)).
> c_char_p has a .value attribute, which allows to access the nul
> terminated string pointed to.  IMO, the cast() function is a better way
> to access the string at that address, instead of implementing .value
> attributes for all the POINTER(byte) types.
>
> Further, I think a get_string() function, which also takes a POINTER
> instance (or even an integer address) as parameter would be useful in
> ctypes, to make it easier to get these strings.  With help of cast, it
> can be implemented in this way, although I would prefer to implement it
> in C to make it more efficient:
>
> def get_string(ptr):
>     return cast(ptr, c_char_p).value

+1 (I recently needed something like cast() for this exact same scenario).

Thanks for ctypes!
-Dave


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