Create an associative array with function pointers as the value

[vit]

On Wednesday, 20 April 2022 at 10:42:59 UTC, rempas wrote:
> I'm trying to create an associative array where the keys will 
> be a "string" type and the values will be function pointers. 
> I'm using a custom type is called "file_struct" and for anyone 
> that wants to try specifically with this type, the definition 
> is the following:
>
> [...]

You need shared static this for initializing immutable AA:

```d
immutable void function(ref file_struct)[string] 
common_identifiers;

shared static this(){
	common_identifiers = [
       "let"     : &parse_let,
       // "macro"   : &parse_macro,
     ];
}
```