Add Compositor class as superclass of Arrow, in Control.Compositor
The Compositor class has two members:
class Compositor comp where
identity :: comp a a
(>>>) :: comp a b -> comp b c -> comp a c
with the obvious monoid. A number of useful types are Compositors but not Arrows.
Trac metadata
Trac field | Value |
---|---|
Version | 6.6.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | libraries/base |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | Unknown |
Architecture | Unknown |