驚き最小の法則
var ws = newWideCString(8)
echo ws.len # -> 0
for n in 0..7: ws[n] = Utf16Char(65 + n)
echo ws.len # -> 8
ws[7] = Utf16Char(0)
echo ws.len # -> 7
echo ws # ABCDEFG
と比べて
var s = newString(8)
echo s.len # -> 8
for n in 0..7: s[n] = ｃｈａｒ(65 + n)
echo s.len # -> 8
s[7] = '\0'
echo s.len # -> 8
echo s # ABCDEFG