| ZVON > References > Haskell reference |
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| | Indexes | Syntax | Prelude | Ratio | Complex | Numeric | Ix | Array | List | Maybe | Char | Monad | >> IO << | Directory | System | Time | Locale | CPUTime | Random |
| Module: | IO |
|---|---|
| Function: | isUserError |
| Type: | IOError -> Bool |
| Description: | a programmer-defined error value has been raised using fail |
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