Steve Crawford <scrawf...@pinpointresearch.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 -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
