Always develop like the next person to work on the code is an axe murderer who know where you live. On Oct 18, 2013 7:56 PM, "TQ White II" <tq@xxxxxxxxxxxxxxx> wrote: > If you wrote a nested ternary like that I'd fire your ass. > > As one of the main programming philosophers said, the art of programming > is making your intentions clear to the next programmer. > > > ----------------------------------- > > TQ White II > 708-763-0100 > > >> On Oct 18, 2013, at 2:02 PM, Jim Giner <jim.giner@xxxxxxxxxxxxxxxxxx> > wrote: > >> > >> On 10/18/2013 10:33 AM, Robert Cummings wrote: > >> Hi Jim, > >> > >> I'm not sure it's a bug. There are two considerations... should the > >> first use of the ternary operator feed the first operand of the second, > >> or should the second use of the ternary operator feed the 3rd operand of > >> the first use. Visually... which is more correct: > >> <?php > >> > >> $foo = ($a ? $b : $c) ? $d : $e; // PHP does this one. > >> > >> $foo = $a ? $b : ($c ? $d : $e); > >> > >> ?> > >> > >> They both seem perfectly reasonable and so I would say it's my job to > >> clarify if I don't want to leave it the the vagaries of the developer's > >> subjective opinion :) To me this isn't a flaw in PHP, but an oversight > >> by the programmer (because they don't see the ambiguity) or they have an > >> incorrect assumption that one way is the right way. Either way... do you > >> think the following makes for readable code? > >> <?php > >> > >> $foo = $a ? $b : $c ? $d : $e; > >> > >> ?> > >> > >> Cheers, > >> Rob. > > When I write something like this, I expect it to happen from left to > right. Always have, always will. That said I see the 'proper' expectation > of this statement: > > > > $foo = $a ? $b : $c ? $d : $e; > > > > as: > > > > $foo will be the result of "if $a then $b else if $c then $d else $e;" > > > > Why php interprets it differently is just not logical to me. Of course > writing something like that with one set of parens solves the riddle as > well as making it more readable: > > > > $foo = $a ? $b : ($c ? $d : $e); > > > > As for ambiguity - I don't see it. Again the literal syntax of the > ternary if is (IMHO): > > "if (cond) then (statement) else (other statment)" > > > > In your example: > > $foo = $a ? $b : $c ? $d : $e; > > I see it exactly as this: > > "if $a is true then > > $b > > else > > if $c is true then > > $d > > else > > $e;" > > > > Why should php evaluate the last statement before deciding if it even > needs that statement? > > > > > > > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >
