Java's +=, -=, *=, /= compound assignment operators Until today I thought that for example: i += j; is just a shortcut for: i = i + j; But what if we try this: int i = 5; long j = 8; Then i = i + j; will not compile but i += j; will compile fine. Does it mean that in fact i += j; is a shortcut for something like this i = (type of i) (i + j)? Answer: As always with these questions, the JLS

Which equals operator (== vs ===) should be used in JavaScript comparisons? I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.length == 0 inside of an if statement. Is there a performance benefit to replacing == with ===? Any performance improvement would be welcomed as many comparison operators exist. If no type conversion takes place, would there be a performance gain over ==? Answer: The identity (===) operator behaves identically to the equality (==) operator except no