"The sensors reported at least partial function in several systems," Dax replied.
The set S is the range of a partial recursive function.
A heap is a partial function mapping memory addresses to values.
A tuple is a partial function from attribute names to atomic values.
Having done so, then I must also accept that there is at least partial function of the optic nerves.
Finally, a partial function can be used by itself, and the result of calling it is equivalent to doing a match over it.
The set of all partial functions on a set, ordered by restriction.
Say that 26 cannot be divided by 11; division becomes a partial function.
One can also consider partial binary functions, which may be defined only for certain values of the inputs.
The key idea is to consider a command as a partial function on some domain of states.