quickfix define missing function as parameter

[stephane-archer]

void foo() {
   bar("Hello Word");
}

you can ask to define bar has a function but you can not ask to define it as a parameter to foo

expected code:

void foo(void Function(String) bar) {
   bar("Hello Word");
}

[bwilkerson]

That seems like a fairly uncommon case. There's a cost to implementing and maintaining fixes like this, so we don't attempt to have 100% of cases covered, just the ones that are useful frequently enough. I'd like to hold off on implementing this until we get a signal that it's broadly desired by the community.

[stephane-archer]

@bwilkerson i think this is an easy way to add a callback has parameter. Just make the call they let the quickfix add it.

I see this useful but I might be th only one. Let's see what people think.

[FMorschel]

If/when we get to this, it might be a good idea to allow any undeclared identifier to be defined as a parameter. Also, we should probably suggest all positional, optional positional (when nullable) and named options.