One of the tips for jslint tool is: ++ and -- The ++ (increment) and -- (decrement) operators have been known to contribute to bad code by encouraging excessive trickiness. They are second only to...

The following code prints a value of 9. Why? Here return(i++) will return a value of 11 and due to --i the value should be 10 itself, can anyone explain how this works? #include<stdio.h> mai...

I'm trying to make ¬ a logical negation operator. ¬ True; multi sub prefix:<¬> ($n) { return not $n; } When I run the above program, it returns this error: $ perl6 test.pl6 ===SORRY!=...

In cpprefernce.com example for prefix increment there is such code: int n1 = 1; ... int n3 = ++ ++n1; Why chained increment in this case does not lead to UB? Is rule for at most once modified no...

I was working on Java prefix operators and came across this behavior i = +--j //does not give an error i = -++j //does not give an error i = ---j //gives an error i = +++j //gives an error Why ...

I have this piece of code (taken from this question): var walk = function(dir, done) { var results = []; fs.readdir(dir, function(err, list) { if (err) return done(err); var pending = list....

I'm getting a warning for this C expression: *p0++ = mult(*p0, psign[i1]); The warning is: unsequenced modification and access to 'p0' [-Wunsequenced] I think the expression should be modifi...

However It is clearly written in precedence table that postfix operator has higher priority than prefix. But still I have a daubt. I start with following example: *ptr++; // evaluate as *(pt...

I am writing my own array class as an exercise. Since, I read non-member functions are actually better in some ways than member functions. (Scott Meyers) I am trying to write as many operator ove...

I was wondering why the following outputs 7 7 6 7 instead of 5 6 6 7 my $a = 5; printf("%d %d %d %d",$a,++$a , $a++ , $a); I'm pretty sure it has something to do with the order of parameters com...

I was having a conversation about the prefix increment operator, and we seem to have run into a disagreement. When running this code: var x = 0; x = ++x; is the second line equivalent to: x =...

Currently I'm teaching a class of C++ programmers the basics of the C# language. As we discussed the topic operators I used C# standard categories of primary, unary etc. operators. One of the atte...

Because I've overloaded the operator++ for an iterator class template<typename T> typename list<T>::iterator& list<T>::iterator::operator++() { //stuff } But when I try to...

Defined this way, we can do neither ++x++ nor ++x--. But on the other hand, both (++x)++ and (++x)-- are useful expressions: (++x)++ increments x by two and returns the value "in the middle", while...

In GHCi: Prelude> (+3) 2 5 Prelude> (*3) 2 6 Prelude> (/3) 2 0.6666666666666666 Prelude> (-3) 2 No instance for (Num (t -> t1)) arising from the literal 3' at <interactive>:1:...

Why is this example of code behaving differently in c++ and C#. [C++ Example] int arr[2]; int index = 0; arr[index] = ++index; The result of which will be arr[1] = 1; [C# Example] int[] arr =...