Re: !foo vs foo == nil
Re: !foo vs foo == nil
- Subject: Re: !foo vs foo == nil
- From: "Clark Cox" <email@hidden>
- Date: Thu, 21 Aug 2008 01:06:50 -0700
On Thu, Aug 21, 2008 at 12:39 AM, Jean-Daniel Dupas
<email@hidden> wrote:
>>>>
>>>
>>> haha gros malin why free (func) does this test?
>>> arf sorry your trusting scale is going to zero
>>
>> Not sure what you're trying to say. According to the C standard, given
>> a variable (foo) the following are identical:
>>
>> if(foo == 0)
>> if(foo == nil)
>> if(foo == NULL)
>> if(!foo)
>> if(foo == '0')
>>
>> and any other way you can compare to a literal zero.
>
> I hope this is a typo but '0' != 0, so the last line is not a valid way to
> test for nullity (but foo == '\0' is).
Indeed, I lost a backslash there :)
--
Clark S. Cox III
email@hidden
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