add async builds

script/async-build

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+script/build $1&

src/day1.cpp

@@ -1,3 +1,4 @@
+// :autocmd BufWritePost *.cpp :silent exec "!script/async-build 1"
 #include <fstream>
 #include <iostream>
 #include <vector>

src/day2.cpp

@@ -1,4 +1,4 @@
-// :autocmd BufWritePost *.cpp :silent exec "!./build 2"
+// :autocmd BufWritePost *.cpp :silent exec "!script/async-build 2"
 #include <fstream>
 #include <iostream>
 #include <numeric>

src/day3.cpp

@@ -1,4 +1,4 @@
-// :autocmd BufWritePost *.cpp :silent exec "!./build 3"
+// :autocmd BufWritePost *.cpp :silent exec "!script/async-build 3"
 #include <fstream>
 #include <iostream>
 #include <numeric>

src/day4.cpp

@@ -1,4 +1,4 @@
-// :autocmd BufWritePost *.cpp :silent exec "!./build 4"
+// :autocmd BufWritePost *.cpp :silent exec "!script/async-build 4"
 #include <cstdint>
 #include <fstream>
 #include <iostream>

src/day5.cpp

@@ -1,4 +1,4 @@
-// :autocmd BufWritePost *.cpp :silent exec "!./build 5"
+// :autocmd BufWritePost *.cpp :silent exec "!script/async-build 5"
 #include <algorithm>
 #include <cstdint>
 #include <fstream>

src/day6.cpp

@@ -1,4 +1,4 @@
-// :autocmd BufWritePost *.cpp :silent exec "!./build 6"
+// :autocmd BufWritePost *.cpp :silent exec "!script/async-build 6"
 #include <cstdint>
 #include <fstream>
 #include <iostream>