I'm learning Nim (previously used Python and C++/etc.) and trying to attempt
[https://adventofcode.com/2018/day/2](https://adventofcode.com/2018/day/2).
I'm using a CountTable to count how many times each character appears:
for line in f.lines:
if line.len == 0: break
var cnts = CountTable[char]()
for c in line:
cnts.inc(c)
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* Is there an editor (vscode/pycharm/sublime/etc.) plugin, or `nim compile`
mode to show the inferred types of local variables? I was a bit confused but
apparently `line` is a `TaintedString` and `c` is a `char` (since changing to
`CountTable[int]()` doesn't compile).
* The documentation for `CountTable` is autogenerated and lacking (no
"description" explaining how to use CountTable). I found a forum thread
([https://forum.nim-lang.org/t/3432](https://forum.nim-lang.org/t/3432)) saying
you can just call `CountTable.inc(obj)`. And the source code for `inc()`
apparently inserts the element if it's not already present. However doing that
in my code results in error:
d2.nim(23) d2
tables.nim(1004) inc
system.nim(414) rawGet
system.nim(2830) sysFatal
Error: unhandled exception: index out of bounds [IndexError]
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Version: kubuntu 18.04:
~ ❯❯❯ nim
Nim Compiler Version 0.19.0 [Linux: amd64]
Compiled at 2018-09-26
Copyright (c) 2006-2018 by Andreas Rumpf
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