I remember reading a while back in regards to logical operators that in the case of OR , using || was better than or (or visa versa).
I just had to use this in my project when it came back to me but I can't remember which operator was recommended or if it was even true.
Which is better and why? Thank you!
Source: Tips4all, CCNA FINAL EXAM
There is no "better" but the more common one is ||. They have different precedence and || would work like one would expect normally.
ReplyDeleteSee also: Logical operators (the following example is taken from there):
// The result of the expression (false || true) is assigned to $e
// Acts like: ($e = (false || true))
$e = false || true;
// The constant false is assigned to $f and then true is ignored
// Acts like: (($f = false) or true)
$f = false or true;
They are used for different purposes and in fact have different operator precedences. The && and || operators are intended for Boolean conditions, whereas and and or are intended for control flow.
ReplyDeleteFor example, the following is a Boolean condition:
if ($foo == $bar && $baz != $quxx) {
This differs from control flow:
doSomething() or die();
There is nothing bad or better, It just depends on the precedence of operators. Since '||' has higher precedence than 'or', so '||' is mostly used.
ReplyDeleteI don't think one is inherently better than another one, but I would suggest sticking with || because it is the default in most languages.
ReplyDeleteEDIT: As others have pointed out there is indeed a difference between the two.