47 lines
781 B
Go
47 lines
781 B
Go
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package aoc
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import (
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"bufio"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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func Runner[R any, F func(*bufio.Scanner) (R, error)](run F) (R, error) {
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if len(os.Args) != 2 {
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Log("Usage:", filepath.Base(os.Args[0]), "FILE")
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os.Exit(22)
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}
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input, err := os.Open(os.Args[1])
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if err != nil {
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Log(err)
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os.Exit(1)
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}
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scan := bufio.NewScanner(input)
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return run(scan)
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}
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func MustResult[T any](result T, err error) {
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if err != nil {
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fmt.Println("ERR", err)
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os.Exit(1)
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}
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Log("result", result)
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}
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func Log(v ...any) { fmt.Fprintln(os.Stderr, v...) }
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func Logf(format string, v ...any) {
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if !strings.HasSuffix(format, "\n") {
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format += "\n"
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}
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fmt.Fprintf(os.Stderr, format, v...)
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}
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func ReadStringToInts(fields []string) []int {
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return SliceMap(Atoi, fields...)
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}
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