| definition: |
head :: [a] -> a head (x:_) = x |
| demand: |
argument 1 |
| deterministic: |
deterministic operation |
| documentation: |
--- Computes the first element of a list. |
| failfree: |
{:}
|
| indeterministic: |
referentially transparent operation |
| infix: |
no fixity defined |
| iotype: |
{({:}) |-> _}
|
| name: |
head |
| precedence: |
no precedence defined |
| result-values: |
_ |
| signature: |
[a] -> a |
| solution-complete: |
operation might suspend on free variables |
| terminating: |
yes |
| totally-defined: |
possibly non-reducible on same data term |