Day 1 in nim

.gitignore

@@ -1,2 +1,5 @@
 /.idea
+/.vscode
 /venv
+/*.exe
+/day??

day01.nim

@@ -0,0 +1,20 @@
+import intsets, math, sequtils, strutils
+
+let input = readFile("data/01.txt").splitLines.map(parseInt)
+
+proc part1(freqs: seq[int]): int =
+    freqs.sum
+
+proc part2(freqs: seq[int]): int =
+    var seen = initIntSet()
+    var talley: int
+
+    while true:
+        for n in freqs:
+            talley += n
+            if talley in seen:
+                return talley
+            seen.incl(talley)
+
+echo part1(input)
+echo part2(input)

docker/Dockerfile

@@ -1,4 +1,6 @@
-FROM pypy:3-slim
+FROM nimlang/nim
+
+RUN apt-get update && apt-get install -y pypy
 
 ADD entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh

docker/entrypoint.sh

@@ -1,4 +1,10 @@
 #!/bin/bash
 
 cd /code
-time pypy3 ${1:-$(find -regex './[0-9]+.py' | sort | tail -n 1)}
+
+if [ -f "day$1.nim" ]; then
+    HOME=/tmp nim c --opt:speed -d:release day$1.nim >/dev/null 2>&1
+    time ./day$1
+else
+    time pypy "$1.py"
+fi

run.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-IMAGE=csmith/aoc-2018-02
+IMAGE=csmith/aoc-2018-03
 
 docker image inspect $IMAGE >/dev/null 2>&1
 if [ $? -ne 0 ]