codewars/go/kyu6/convertstringtocamelcase/convertstringtocamelcase.go

package kata

import (
	"fmt"
	"strings"
	"unicode"
)

func ToCamelCase(s string) string {
	// Only handle the underscore case.
	u := strings.ReplaceAll(s, `-`, `_`)
	fmt.Println("Checking", u)

	res := make([]rune, 0, len(u))
	atFirst := true
	atInitial := true
	for _, r := range u {
		fmt.Printf("%c: ", r)
		if r == '_' {
			fmt.Println("Skipping _, setting Initial")
			atInitial = true
			continue
		}

		if atFirst {
			fmt.Println("First")
			res = append(res, r)
			atFirst = false
			atInitial = false
			continue
		} else if atInitial {
			fmt.Println("atInitial")
			res = append(res, unicode.ToUpper(r))
		} else {
			fmt.Println("not")
			res = append(res, r)
		}
		atInitial = false
	}

	return string(res)
}