| definition: |
(!??) :: [a] -> Maybe Int -> Maybe a _ !?? Nothing = Nothing xs !?? (Just i) = xs !? i |
| demand: |
argument 2 |
| deterministic: |
deterministic operation |
| documentation: |
Same as (!?) but the index can be Nothing too. |
| failfree: |
(_, _) |
| indeterministic: |
referentially transparent operation |
| infix: |
no fixity defined |
| iotype: |
{(_,{Nothing}) |-> {Nothing} || (_,{Just}) |-> {Just,Nothing}}
|
| name: |
!?? |
| precedence: |
no precedence defined |
| result-values: |
{Just,Nothing}
|
| signature: |
[a] -> Prelude.Maybe Prelude.Int -> Prelude.Maybe a |
| solution-complete: |
operation might suspend on free variables |
| terminating: |
possibly non-terminating |
| totally-defined: |
possibly non-reducible on same data term |