Pattern synonyms and view pattern arguments
In my code, I had a few complicated patterns involving view patterns that depended on local arguments, i.e.
foo env (someView env -> Just x) = ...I was hoping to be able to use PatternSynonyms to abstract and simplify this:
pattern Pat env x <- (someView env -> Just x)
foo env (Pat env x) = ...but it says Not in scope: env.
It would be nice if I could use pattern synonyms here as well.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.10.2 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |