OK, let's say I have a array-type variable.
Is it possible to set it to... nothing?
I mean let's say a function takes an array parameter, with some (or no) values.
I could obviously declare it as a seq, but then we would deal with memory
allocation. I can also declare it as an openArray, and then I can pass both an
array with values and an empty one, e.g.
proc myFunc(a: openArray[int], b: openArray[int]) =
....
myFunc([1,2,3],[])
Run
Now, the problem arises when this array is e.g. part of an object. E.g.
myobj = object
a: openArray[int]
Run
(I'm not allowed to do that)
If I try to define it as a c-style array, the definition goes well, but I
cannot find a way to be able to set it to empty too. E.g.
myobj = object
a: array[5,int]
b: array[5,int]
myobj(a: [1,2,3,4,5], b: [])
Run
In the case of b, it complains because it keeps expecting - exactly - 5 items.
How can I circumvent that, so that I can set any number of arguments, from
zero(0) to 5?
