Read for Arrays does not work
In hugs I can go:
Array> read (show (array (1,1) [(1,42)])) :: Array Int Int
array (1,1) [(1,42)]
whereas ghc gives me:
Main> read (show (array (1,1) [(1,42)])) :: Array Int Int
<interactive>:1:
No instance for (Read (Array Int Int))
arising from use of `read' at <interactive>:1
In an expression with a type signature:
read (show (array (1, 1) [(1, 42)])) :: Array
Int Int
In the definition of `it':
read (show (array (1, 1) [(1, 42)])) :: Array
Int Int
The Haskell Library Report 98 says Read should be defined
for Array a b, with (Read a, Ix a, Read b)
Trac metadata
| Trac field |
Value |
| Version |
5.02 |
| Type |
Bug |
| TypeOfFailure |
OtherFailure |
| Priority |
normal |
| Resolution |
ResolvedFixed |
| Component |
hslibs/lang |
| Test case |
|
| Differential revisions |
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| BlockedBy |
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| Related |
|
| Blocking |
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| CC |
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| Operating system |
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| Architecture |
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