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Message from discussion ctypes details was: Re: syntax for code blocks
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mwil...@the-wire.com  
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 More options Apr 30 2012, 11:42 am
Newsgroups: comp.lang.python
Followup-To: comp.lang.python
From: mwil...@the-wire.com
Date: Mon, 30 Apr 2012 11:42:04 -0400
Local: Mon, Apr 30 2012 11:42 am
Subject: ctypes details was: Re: syntax for code blocks
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> On 4/30/2012 17:02, Kiuhnm wrote:
>> BignumTypePtr = ctypes.POINTER(BignumType)

>> for op, op_word in ((libbnem.BN_add, libbnem.BN_add_word),
>> (libbnem.BN_sub, libbnem.BN_sub_word)):
>> op.argtypes = [BignumTypePtr] * 3
>> op_word.argtypes = [BignumTypePtr, ctypes.c_ulong]
>> op.restype = op_word.restype = ctypes.c_int

> On second thought, BignumPtrType is probably the right name.

(Way off the original topic, aren't we?)  I haven't looked inside ctypes,
and don't know what kind of thing ctypes.POINTER actually constructs.  I was
worried about falling into a [[a]]*3 kind of error -- unwittingly sharing a
mutable object.  I guess I really should look.

        Mel.


 
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