init, day one solution

.gitignore

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+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work

dayone.go

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+package main
+
+import (
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+)
+
+func dayOne(input string) (maxCalories int) {
+	// split input by newlines
+	var eachPart = strings.Split(input, "\n")
+
+	// trim all remaining whitespace
+	for i := range eachPart {
+		eachPart[i] = strings.TrimSpace(eachPart[i])
+	}
+
+	// assign a max value and a current value
+	maxCalories = 0
+	temp := 0
+
+	for i := 0; i < len(eachPart); i++ {
+		// this indicates we have reached the end of each elf's snack stash
+		if eachPart[i] == "" {
+			// use the max between curent temp value and the current max value found
+			maxCalories = int(math.Max(float64(maxCalories), float64(temp)))
+
+			// reassign temp to zero and start again
+			temp = 0
+			continue
+		}
+
+		// string to int conversion
+		partToInt, err := strconv.Atoi(eachPart[i])
+
+		if err != nil {
+			panic(err)
+		}
+
+		// add the result to our current working total
+		temp += partToInt
+	}
+
+	return
+}
+
+func main() {
+	var result int;
+	var input string;
+
+	input =
+		`1000
+		2000
+		3000
+
+		4000
+
+		5000
+		6000
+
+		7000
+		8000
+		9000
+
+		10000`
+
+	result = dayOne(input)
+
+	fmt.Println(result)
+
+	input =
+	`
+	245
+	256
+	939
+
+	-12039
+
+
+	4949
+
+	2
+	2
+	2
+	`
+
+	result = dayOne(input)
+	fmt.Println(result)
+}

go.mod

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+module github.com/innocuous-symmetry/aoc
+
+go 1.20