Re: Patch: iff -> if

On 04/15/2014 05:36 PM, Andrew Dunstan wrote:
>
> On 04/15/2014 06:26 PM, Thom Brown wrote:
>> On 15 April 2014 23:19, Andreas 'ads' Scherbaum 
>> <adsmail@wars-nicht.de> wrote:
>>> Hi,
>>>
>>> stumbled over a number of "iff" in the source where "if" is meant - 
>>> not sure
>>> what the real story behind this is, but attached is a patch to fix 
>>> the about
>>> 80 occurrences.
>>>
>>> This only appears in comments, not in any code path.
>> Yeah, apparently those are intentional, and mean "if and only if" 
>> (i.e. <=>)
>>
>
> This is a reasonably common idiom, or used to be.

If it has fallen into disuse the news has failed to reach me:

http://en.wikipedia.org/wiki/If_and_only_if
http://www.mathwords.com/i/if_and_only_if.htm
http://mathworld.wolfram.com/Iff.html
...

Cheers,
Steve