Dag Sverre Seljebotn wrote:
> Lisandro Dalcin wrote:
>> On Wed, Aug 20, 2008 at 9:28 PM, Greg Ewing
>> <[EMAIL PROTECTED]>
>> wrote:
>>> Speaking of that, I've been thinking for a while now
>>> about making "not None" the default, and requiring
>>> "or None" to specify that None is an acceptable
>>> parameter value.
>>
>> Definitely +1 for me.
>>
>>> Having seen a number of pieces of Pyrex code that
>>> were susceptible to being crashed because "not None"
>>> wasn't used where it should have been, I think
>>> this would be a safer default.
>>
>> Indeed. My own code suffered for this flaw, I realized about this
>> Cython behavior reading the generated C code, and then I went to the
>> docs to comfirm this. Up to now, I'm not yet completelly sure that all
>> my code is free of "None" crashes.
>>
>>> The change may
>>> break some existing code, though.
>>
>> Yes, but surely is will make others codes to become correct.
>
> But it does it by making a hard restriction on what kind of code you can
> write -- I'd like to be able to pass None to functions (in a safe manner),
> not just disable the feature.

I meant: Not just disable the feature by default so that I have to write
"MyClass or None".

Dag Sverre

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