Add Functor, Applicative, Monad instances for First, Last
This was proposed in 2011 [1] with no serious objections although wasn't implemented until it was again mentioned in 2014 [2].
[1] http://www.haskell.org/pipermail/libraries/2011-January/015552.html [2] http://www.haskell.org/pipermail/libraries/2014-June/023228.html
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.8.2 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
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| Operating system | |
| Architecture |