[boost] [Fusion] Some ideas

Subject: [boost] [Fusion] Some ideas
From: TONGARI (tongari95_at_[hidden])
Date: 2013-02-02 02:52:21

Hi,

Here are some ideas come up when writing some associative mapping
algorithm/views.
I think it'd be nice to have:
* Auxiliary function 'eval' to force the evaluation of transform-like view
  e.g. fusion::eval(fusion::transform(a, b, some_void_return_ftor))
* Conversion function 'as_view' to make Container a view to reserve the
mutability.

What do you think? Are these already achieved in some way that I didn't
aware of?

BTW, I just implemented left_mapping/left_mapped_view, it's used like

    result = left_mapping(m1, m2, transform);

For elements not mapped, fusion::void_ is passed to transform.

Still mapping & full_mapping to do...