| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Steve Crawford <scrawford(at)pinpointresearch(dot)com> |
| Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, Thom Brown <thom(at)linux(dot)com>, "Andreas 'ads' Scherbaum" <adsmail(at)wars-nicht(dot)de>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Patch: iff -> if |
| Date: | 2014-04-16 01:35:11 |
| Message-ID: | 9421.1397612111@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Steve Crawford <scrawford(at)pinpointresearch(dot)com> writes:
> On 04/15/2014 05:36 PM, Andrew Dunstan wrote:
>> On 04/15/2014 06:26 PM, Thom Brown wrote:
>>> Yeah, apparently those are intentional, and mean "if and only if"
>> 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
The last discussion about this suggested that non-English speakers
might be familiar with other abbreviations for the concept.
But anyway, yes, those are not typos.
regards, tom lane
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