Beginner-targeted language extension
FMP significantly complicated type signatures such as length :: Foldable t => t a -> Int
, which makes teaching Haskell more difficult.
I propose a language extension -XBeginner
which instructs GHC(i) to specialize Foldable
and Traversable
to []
when possible and in case of an ambiguous instance, default those to []
.
Trac metadata
Trac field | Value |
---|---|
Version | 7.10.2 |
Type | FeatureRequest |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
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Blocking | |
CC | |
Operating system | |
Architecture |