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Tue Apr 9 09:46:10 EDT 2019

Multiplexers

Here's the thing: digital circuit design is mostly about multiplexers.
So Seq should have really good abstractions for that.

Basically, this is the 'case' or 'switch' statement.

Currently I have this working for lists, but it should work for
arbitrary collection types.

Is there a way to do this "flattening" operation better?


Write it as a fold?

What I want, is an algebraic data type instead of a case or switch
statement.  As I've recently learned, it should be possible to write
it as a fold instead.


Summary: multiplexers are the most important circuit, and I've made it
very difficult to express them.

Two elements:

- monadic notation is cumbersome

- grouping only supports lists

- defaults are quite useful




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