proc genArray(i, j: int) : seq[cstring] =
result = newSeqOfCap[cstring](j - i + 1)
for k in i .. j:
result.add(($k).cstring)
var a = genArray(1, 900)
for i in a:
echo i
The output contains mostly valid numbers, but some garbage. Of course cstrings
exists only for C FFI, so using it this way is really stupid. I tried it just
for a test of a robin hood hash, to investigate how key size degrades
performance. (I was a bit surprised at first that hash is much slower for Nim
strings as key than for plain ints -- but it is clear, int size is 4 or 8 byte,
Nim string size should be at least twice, c pointer and size.) For the code
above -- may GC just free the string immediately?
