adventofcode/2020/lib/util/strings.go

package util

import (
	"log"
	"strconv"
)

// Takes a slice of strings as from reading each line in a file.
// Concatenates strings, creating new ones when blank lines are encountered
// NB: adds a single space to the beginning of each concatenated line.
func SplitOnBlankLine(input []string) []string {
	converted := []string{}

	current := ""
	for _, line := range input {
		if line == "" {
			converted = append(converted, current)
			current = ""
			continue
		}

		current += " " + line
	}

	return converted
}

func MustAtoi(input string) int {
	ret, err := strconv.Atoi(input)
	if err != nil {
		log.Panicf(err.Error())
	}
	return ret
}