Add section on Function type declarations to 'Functions' page

[mmcdon20]

Page URL

https://dart.dev/language/functions/

Page source

https://github.com/dart-lang/site-www/tree/main/src/content/language/functions.md

Describe the problem

The functions page doesn't explain Function type declarations.

In contrast, the records page does explain record types for example.

Expected fix

Add some explanation about how to use Function type declarations. (Including defining return types, parameter types, etc).

It might also be worth mentioning Function types on the built-in types page.

Additional context

No response

I would like to fix this problem.

• [ ] I will try and fix this problem on dart.dev.

[RikinR]

If no one is working on it I would like to work on this issue

[RikinR]

hey ! by types of functions we are talking about static , getter & setter , constructors , anonymous and lamda functions right ?

[mmcdon20]

I was referring to the type declaration for a Function.

int add(int a, int b) => a + b;

int Function(int, int) f = add;

In the above code, f is the type int Function(int, int).

[RikinR]

Hey ! I have submitted the PR .