Short: struct{} datatype
Date: Mon, 14 Dec 1998 11:33:40 +0100
Type: Feature
State: Done - implemented in 3.3.246

> 2. We lack a struct/class-ish data type. This is a big win in MudOS.
>    Essentially, a fixed-size type-checked array, with the ability to
>    recursively reference itself, ie:
>
>    struct foo { int datum; struct foo next; };

MudOS implements it using arrays, letting the compiler translate
the member names into the indices.
Question: Are these copied by ref or by value? MudOS copies by ref.

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Date sent:      	Fri, 2 Jun 2000 15:50:08 -0700 (PDT)
From:           	David Gibby <oop_apprentice@yahoo.com>
Subject:        	Structs Enums and stuff
To:             	lars@bearnip.com

Okay, I heard a rumor speaking of you doing up a class
data-type after some bug fixing, and I was wondering,
if this is true, maybe you could name them 'struct',
since they will probally consist only of variables?
Oh, and because in MudOS you have to use the classic C
style declaration:

class <classname> <varname>;

But, classes weren't in C, they were in C++, and in
C++ you don't have to put 'class' or 'struct' in
special typed variables, you could simply say:

<classname> <varname>;

So I think that 'struct' would be a more appropriate
name for a structure like class filled with variables.
Oh, and there's got to be some way for objects with
the EXACT same class definition, eg:

// [this.c]

struct blah {
    string name;
    int    number;
    int    other_number;
};

void create( void )
{
    struct blah temp;
    temp.name = "hello";
    temp.number = 3;

    "/std/that.c"->SetMyBlah( temp );
}


// [that.c]

struct blah {
    string name;
    int    number;
    int    other_number;
} aBlah;

void SetMyBlah( struct blah val )
{
    aBlah = val;
}


To send a structure in its whole data through a call
other. Yes, it would be messy, but it would be a nice
feature to have.

One final thing, in C/C++ you can initialize a
structure by using { val1, val2 } following a '=', eg,

struct MyStruct = { "Hello", 3, 27 };

Maybe one should be able to pass a virtual instance of
this structure by saying:

"/std/that.c"->SetMyBlah( { "Hello", 3, 27 } );

Then, the argument would be a constant struct which
was compatible with the blah structure.

--------------------------------------------------------------------------
When doing structs, offer an 'embed' keyword for sub-structs and 
arrays, to embed them in their full length. This would introduce 
'fixed length' arrays.