std.mixins

Jacob Carlborg doob at me.com
Wed Sep 1 13:55:45 PDT 2010


On 2010-08-31 03:04, dsimcha wrote:
> I've been toying for a long time with the idea of a std.mixins for Phobos that
> would contain meta-implementations of commonly needed boilerplate code for
> mixing into classes and and structs.  I've started to prototype it
> (http://dsource.org/projects/scrapple/browser/trunk/std_mixins/std_mixins.d).
>   So far I have a mixin for struct comparisons, which is useful if you need a
> total ordering for use with sorting or binary trees, but don't care exactly
> how that ordering is defined.  I've also got a mixin that converts a class to
> a Singleton, and uses thread-safe but efficient mechanisms to deal with the
> __gshared singleton case.
>
> I'm also thinking of creating some mixins to allow cloning of arbitrarily
> complicated object graphs, provided that you don't stray outside of SafeD.  Is
> this worth implementing or will it likely be solved in some other way at some
> point?
>
> Right now I'd just like to milk the D community for ideas.  What other pieces
> of boilerplate code do you find yourself writing often that the standard
> library should help with?

How about adding a static opDispatch (or alias this) that will forward 
every method call to the "instance" method. This would allow code like this:

Foo.method; // shortcut for the line below
Foo.instance.method;

-- 
/Jacob Carlborg


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