#conditional-operator

Does Python have a ternary conditional operator?

Yes, it was added in version 2.5. The expression syntax is: a if condition else b First condition is evaluated, then exactly one of either a or b is evaluated and returned based on the Boolean value of condition. If condition evaluates to True, then a is evaluated and returned but b is ignored, or else when b is evaluated and returned but a is ignored. This allows short-circuiting because…

How to: Return type of '?:' (ternary conditional operator) #it #answer #programming

Return type of ‘?:’ (ternary conditional operator)

Why does the first return a reference?

int x = 1; int y = 2; (x > y ? x : y) = 100;

While the second does not?

int x = 1; long y = 2; (x > y ? x : y) = 100;

Actually, the second did not compile at all – “not lvalue left of assignment”.

Answer [by Xeo]: Return type of ‘?:’ (ternary conditional operator)

The type of the ternary ?:expression is…

How to: Nullable types and the ternary operator: why is `? 10 : null` forbidden?

Nullable types and the ternary operator: why is `? 10 : null` forbidden?

I just came across a weird error:

private bool GetBoolValue() { //Do some logic and return true or false }

Then, in another method, something like this:

int? x = GetBoolValue() ? 10 : null;

Simple, if the method returns true, assign 10 to the Nullableint x. Otherwise, assign null to the nullableint. However, the compiler…

How to: To ternary or not to ternary?

To ternary or not to ternary?

I’m personally an advocate of the ternary operator: () ? : ; I do realize that it has its place, but I have come across many programmers that are completely against ever using it, and some that use it too often.

What are your feelings on it? What interesting code have you seen using it?

Answer: To ternary or not to ternary?

In my mind, it only makes sense to use the…

Fixed Ternary operator is twice as slow as an if-else block? #dev #it #asnwer

Ternary operator is twice as slow as an if-else block?

I read everywhere that ternary operator is supposed to be faster than, or at least the same as, its equivalent if-else block.

However, I did the following test and found out it’s not the case:

Random r = new Random(); int[] array = new int[20000000]; for(int i = 0; i 0) { value += 2; } else { value += 3; } // if-else block above takes on…

How to: What does the question mark and the colon (?: ternary operator) mean in objective-c?

What does the question mark and the colon (?: ternary operator) mean in objective-c?

What does this line of code mean?

label.frame = (inPseudoEditMode) ? kLabelIndentedRect : kLabelRect;

The ? and : confuse me.

Answer: What does the question mark and the colon (?: ternary operator) mean in objective-c?

Building on Barry Wark’s excellent explanation…

What is so important about the ternary…

How to: Operator precedence with Javascript Ternary operator

Operator precedence with Javascript Ternary operator

I cant seem to wrap my head around the first part of this code ( += ) in combination with the ternary operator.

h.className += h.className ? ' error' : 'error'

The way i think this code works is as following:

h.className = h.className + h.className ? ' error' : 'error'

But that isn’t correct because that gives a error in my console.

So my…

How to: Return type of '?:' (ternary conditional operator)

Return type of ‘?:’ (ternary conditional operator)

Why does the first return a reference?

int x = 1; int y = 2; (x > y ? x : y) = 100;

While the second does not?

int x = 1; long y = 2; (x > y ? x : y) = 100;

Actually, the second did not compile at all – “not lvalue left of assignment”.

Answer: Return type of ‘?:’ (ternary conditional operator)

The type of the ternary ?:expression is the…