Struct and class support

[jcd]

struct Foo {
   string name;
   string age;
}

Foo f = json.get!Foo(myjson);

also works the other way around

auto f = Foo("myname", 12);
json2.put("myfoo", f);

Maybe even introduce a UDA for optional fields:

struct Foo {
   string name;
   @optional string age;
}

[trikko]

Maybe:

struct Foo {
   @bind("renamed") 
   string _blah;

   @bind string name;
   @optional string age;

   int ignored;
}

?

[trikko]

Or better:

struct Foo {
   @bind("renamed") 
   string _blah;

   @bind!int string test; // On json this is a int
   @bind string name;
   @optional string age;

   int ignored;
}

to support get and as

[jcd]

I think that binding should be default for a field. Maybe that is the default and could be changed with a struct UDA:

struct Foo {
   @bind("renamed") 
   string _blah;

   string name;
   @optional string age;

   @ignored
   int ignored;
}

and

@bind!false
struct Foo {
   @bind("renamed") 
   string _blah;

   @bind string name;
   @optional string age;

   int ignored;
}

not sure...just an idea.

[trikko]

What i don't like about bound-by-default is that - for example - if you add a new property it is bound automatically and probably you don't remember this (in your example all annotations are optionals).

Maybe this sounds better.

Version for impavid:

@autobind
struct Foo{ ... }

Safer way:

struct Foo
{
    @bind("user_age") @default(18)   // If there's a default it's optional (and viceversa)
    int age; 
}

[jcd]

You don't like bound-by-default because it might brake existing code not supporting a newly added field? You got a point with that. It could be fixed by making all fields @optional by default. Keeping the @Bind for fields that must be there and have a new @ignore for fields that should be ignored.

That would make all structs/classes work out of the box with no annotations but could be annotated to make thing more specified if needed.