when giving an error "No instance for C (a -> b)", suggest that a function may be underapplied
Suggestion of ibotty here: http://www.reddit.com/r/haskell/comments/2go92u/beginner_error_messages_in_c_vs_haskell/cklm7jk
Prelude> print length
<interactive>:2:1:
No instance for (Show ([a0] -> Int)) arising from a use of ‘print’
but there is an instance for (Show Int);
maybe you omitted an argument to ‘length’ of type [a0]?
In the expression: print length
In an equation for ‘it’: it = print lengthI guess the trickiest part will be figuring out what function is underapplied.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.8.3 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler (Type checker) |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |