The kind of (=>)
This is mainly a request for clarification, and not very important.
Is there any good (theoretical, implementation, practical, ...) reason why (with ConstraintKinds) enabled, the => symbol on the type-level is still treated as a built-in syntactic construct rather than a type-level operator with
GHCi> :kind (=>)
(=>) :: Constraint -> * -> *Note that I'm not actually proposing to make it re-definable, but to treat it similarly to the (->) type operator.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.8.2 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | low |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |