Thanks for the pointer. I adapted the example like this:
const DIGITS = "0123456789"
proc parseInt(s : string, radix: range[8..10]) : uint64 =
var str = s
result = 0
for i in 0 .. str.high:
let c = str[i]
assert c in DIGITS[0 ..< radix]
result = result * radix + uint64(DIGITS.find c)
echo parseInt("077", 8)
Run
It compiles, and seems to run as expected, but I get a warning which is hard to
understand:
Hint: used config file '/nim/config/nim.cfg' [Conf]
Hint: system [Processing]
Hint: in [Processing]
in.nim(9, 14) template/generic instantiation from here
lib/system.nim(325, 3) Warning: Cannot prove that 'result' is initialized.
This will become a compile time error in the future. [ProveInit]
Run
It's complaining about the assert line - but I can't see the connection between
that and result, and moreover result _is_ initialized at line 5, result = 0.
Any ideas how to interpret this?
