Yep!
Of course I meant  it conceptually!  (ROFL).
Luckily not that burned out yet! :-D
Thanks again.
M.

On 05/20/2013 04:35 PM, Jens Erat wrote:
You don't really need them, they're just syntactical sugar making the code more 
readable for everybody familiar with functional programming.

- `head($sequence)` could be written as `$sequence[1]`
- `tail($sequence)` could be written as `$sequence[position()>1]`


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