Shorthand for calling a nullable callback in Dart?

Question

Say, I have this:

VoidCallback callback;

It can only be called if it isn't null, so for that I am doing:

if (callback != null) callback();

Is there any shorthand similar to this?

callback?.();

Your question title is wrong. You mean calling a *nullable* *callback*. — jamesdlin, May 21 '20 at 14:46
Does this answer your question? [Null aware function invocation operator](https://stackoverflow.com/questions/45022232/) — jamesdlin, May 21 '20 at 15:42

score 5 · Accepted Answer · answered May 22 '20 at 06:28

5

Thanks to @jamesdlin, the solution is:

VoidCallback callback;
callback?.call();

answered May 22 '20 at 06:28

iDecode

1 Answers1