Null coalescing operator?

Help & Support
1

Even though the ternary operator (and/or some if() functions) work great in the evaluator, I think having a null coalescing operator would help for readability.
I must admit that I think it would only help if it would also count empty strings as 'null' though.

Evaluator If clauses within For Loops
2

Any thoughts on this?

3

The evaluator doesn't have the concept of null so I'm not sure how useful this would be. What's an example of how you'd use it?

4

I understand that null is difficult, which is why I would like it to recognize empty strings (or maybe also 0?):

x = regex(string, test1, "\1", "e");
y = regex(string, test2, "\1", "e");
return x ?? y 	// Return either x or y, depending on x being empty
5

I think it just does not exist in the jscript version Windows is providing and Opus is relying upon.
It appeared in more recent version of javascript.

6

Thanks, that makes sense. We'll add this in the next beta. It'll use a "logical not" test, so x ?? y will be functionally equivalent to if (!x) { x = y; }. That will mean empty strings, the value 0 and the value false.

2 Likes
7

I am looking forward to this.
I have no particular use for it at this time, but I have a few Regular Expressions that rely on Null Capture Groups.

8

Thanks, I appreciate it!

9

Works in 13.17.1