`newSeqOfCap[int](70)` is just like `newSeq[int](70)` the only difference is
the first only sets the capacity and it doesnt add any elements so it's an
"empty" allocated sequence. So it avoids more allocation the same but `len` is
`0`
worried get reallocation process, is the same as nr=ew Seq it'll avoid
reallocation cost ?
Use `newSeqOfCap` instead of newSeq
var d = newSeqOfCap[array[2, string]](70)
d.add ["foo", "bar"]
d,add ["moo", "dar"]
for u in d:
...
Run
How to limit `for loop` iteration up to number of only initialized or filled
array elements
var
d = newSeq[ array[2,string]](70)
d[0] = ["foo", "bar"]
d[1] = ["moo", "dar"]
for u in d : # ... so on
# will loop 70
