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face time n. [common] Time spent interacting with somebody face-to-face (as opposed to via electronic links). "Oh, yeah, I spent some face time with him at the last Usenix."
factor n. See {coefficient of X}.
fairings n., /fer´ingz/. [FreeBSD; orig. a typo for fairness] A term thrown out in discussion whenever a completely and transparently nonsensical argument in one's favor(?) seems called for, e,g. at the end of a really long thread for which the outcome is no longer even cared about since everyone is now so sick of it; or in rebuttal to another nonsensical argument ("Change the loader to look for /kernel.pl? What about fairings?")
fall over vi. [IBM] Yet another synonym for {crash} or {lose}. 'Fall over hard' equates to {crash and burn}.
fall through v. (n. fallthrough, var.: fall-through) 1. To exit a loop by exhaustion, i.e., by having fulfilled its exit condition rather than via a break or exception condition that exits from the middle of it. This usage appears to be really old, dating from the 1940s and 1950s. 2. To fail a test that would have passed control to a subroutine or some other distant portion of code. 3. In C, 'fall-through' occurs when the flow of execution in a switch statement reaches a case label other than by jumping there from the switch header, passing a point where one would normally expect to find a break. A trivial example: switch (color) { case GREEN: do_green(); break; case PINK: do_pink(); /* FALL THROUGH */ case RED: do_red(); break; default: do_blue(); break; } The variant spelling /* FALL THRU */ is also common. The effect of the above code is to do_green() when color is GREEN, do_red() when color is RED, do_blue() on any other color other than PINK, and (and this is the important part) do_pink() and then do_red() when color is PINK. Fall-through is {considered harmful} by some, though there are contexts (such as the coding of state machines) in which it is natural; it is generally considered good practice to include a comment highlighting the fall-through where one would normally expect a break. See also {Duff's device}.
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