ternary-operator

This is a GNU extension on ternary operation according to the Wikipedia . iMyVal = --iVal ?: iDft; While I'm fully aware that this is a GNU extension, but sometimes things may come in very handy with this special syntax. So, does anybody know if this syntax is only available in gcc ? Or are they any other compilers which support it? to anyone who's interested, PHP started supporting this syntax from 5.3 Thanks in advance. Some answers: GCC - yes MSVC - no (based on vanetto's answer) CLANG - no yes - the LLVM online compiler compiles it successfully. Intel C compiler - yes Bottom line - not

Why ternary operator doesn't work with assignment by reference? $obj = new stdClass(); // Object to add $result = true; // Op result $success = array(); // Destination array for success $errors = array(); // Destination array for errors // Working $target = &$success; if(!$result) $target = &errors; array_push($target, $obj); // Not working $target = $result ? &$success : &$errors; array_push($target, $obj); John Here you go $target = ($result ? &$success : &$errors); Also your example has two typos edit http://php.net/manual/en/language.operators.comparison.php Note: Please note that the

For the very common case of assigning a value to a variable based on the outcome of an expression I'm a fan of ternary operators: $foo = $bar ? $a : b; However, if $bar is a relatively expensive operation and I want to assign the result of $bar to $foo if the result is truthy, this is inefficient: $foo = SomeClass::bigQuery() ? SomeClass::bigQuery() : new EmptySet(); One option is: $foo = ($result = SomeClass::bigQuery()) ? $result : new EmptySet(); But I'd rather not have the extra $result sitting in memory. The best option I've got is: $foo = ($foo = SomeClass::bigQuery()) ? $foo : new

dim val1 As Integer? = If(5 > 2, Nothing, 43) ' val1 = 0 dim val1 As Integer? = If(5 > 2, Nothing, Nothing) ' val1 = Nothing What gives? Is this a bug, or am I overlooking something? The problem is that Nothing in VB.NET works differently than, for example, null in C#. When Nothing is used in the context of a value type (such as Integer ) it represents the default value of that type. In this case, that's 0. In your first example, both branches of the ternary operator are valid Integer values. The true branch represents 0 and the false branch represents 43. In the second example, neither branch

This question already has an answer here: Why does a ternary conditional expression returning null and assigned to a reference type cause a NullPointerException? [duplicate] 2 answers Can someone explain me why in the first case null pointer was detected, but no on the other ? Maybe he always looks on the first type, but why he does so only if the condition is false.. @Test public void test1() { final Integer a = null; final Integer b = false ? 0 : a; //===> NULL POINTER EXCEPTION } @Test public void test2() { final Integer b = false ? 0 : null; //===>NOT NULL POINTER EXCEPTION } @Test public