syntax for code blocks

[Kiuhnm]

On 4/30/2012 16:17, mwilson at the-wire.com wrote:
> Ben Finney wrote:
>
>> [ ... ] Even worse is the
>> penchant for ‘foo .bar()’, the space obscures the fact that this is
>> attribute access.
>
> I like the style sometimes when it helps to break the significantly different parts out of
> boilerplate:
>
>      libbnem. BN_add .argtypes = [ctypes.POINTER (BignumType), ctypes.POINTER (BignumType),
> ctypes.POINTER (BignumType)]
>      libbnem. BN_add .restype = ctypes.c_int
>      libbnem. BN_add_word .argtypes = [ctypes.POINTER (BignumType), ctypes.c_ulong]
>      libbnem. BN_add_word .restype = ctypes.c_int
>
>      libbnem. BN_sub .argtypes = [ctypes.POINTER (BignumType), ctypes.POINTER (BignumType),
> ctypes.POINTER (BignumType)]
>      libbnem. BN_sub .restype = ctypes.c_int
>      libbnem. BN_sub_word .argtypes = [ctypes.POINTER (BignumType), ctypes.c_ulong]
>      libbnem. BN_sub_word .restype = ctypes.c_int
>
> (there were a lot more in the original program where those came from.)  Another take-away
> might be don't use boilerplate, but in the situation I didn't see a simple way to avoid it.
>
> 	Mel.

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

Kiuhnm