Getters/setters generator

[Eugene Wissner via Digitalmars-d-announce]

On Tuesday, 13 June 2017 at 19:31:28 UTC, jmh530 wrote:
> On Sunday, 11 December 2016 at 02:17:18 UTC, Mike Parker wrote:
>>
>> What are properties if not "getters" and "setters"? From the 
>> original post: "It would generate 2 methods "num": one to set 
>> num_ and one to get its value."
>>
>> Two methods named "num". No "get" or "set" in sight.
>
> Sorry to bump, but it also isn't hard to use mixins to write 
> more generic get/set.
>
> import std.stdio : writeln;
>
> struct Foo
> {
> 	private int a;
> 	private int b;
> 	
> 	void set(string variable)(int x) @property
> 	{
> 		mixin(variable ~ " = x;");
> 	}
> 	
> 	int get(string variable)() @property
> 	{
> 		return mixin(variable);
> 	}
> }
>
> void main()
> {
> 	Foo foo;
> 	foo.set!("a")(1);
> 	foo.set!("b")(2);
> 	writeln(foo.get!("a"));
> 	writeln(foo.get!("b"));
> }

I suppose the errors will be more cryptic, since you don't check 
if the string referers to an existing member.

You provide only get/set that return by value. So you may need to 
generate getters/setters for const values, for ref values, for 
const ref values... And it would result in much more code for 
every object.