using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CodeGenerator
{
 public static class CommonHelper
 {
 /// <summary>
 /// 首字母小写写
 /// </summary>
 /// <param name="input"></param>
 /// <returns></returns>
 public static string FirstCharToLower(this string input)
 {
 if (String.IsNullOrEmpty(input))
 return input;
 string str = input.First().ToString().ToLower() + input.Substring(1);
 return str;
 }

 /// <summary>
 /// 首字母大写
 /// </summary>
 /// <param name="input"></param>
 /// <returns></returns>
 public static string FirstCharToUpper(this string input)
 {
 if (String.IsNullOrEmpty(input))
 return input;
 string str = input.First().ToString().ToUpper() + input.Substring(1);
 return str;
 }
 }
}