Admin.Core/src/platform/ZhonTai.Common/Extensions/StringExtension.cs

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using System;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using ZhonTai.Common.Extensions;

namespace ZhonTai;

public static class StringExtension
{
    /// <summary>
    /// 判断字符串是否为Null、空
    /// </summary>
    /// <param name="s"></param>
    /// <returns></returns>
    public static bool IsNull(this string s)
    {
        return string.IsNullOrWhiteSpace(s);
    }

    /// <summary>
    /// 判断字符串是否不为Null、空
    /// </summary>
    /// <param name="s"></param>
    /// <returns></returns>
    public static bool NotNull(this string s)
    {
        return !string.IsNullOrWhiteSpace(s);
    }

    /// <summary>
    /// 与字符串进行比较，忽略大小写
    /// </summary>
    /// <param name="s"></param>
    /// <param name="value"></param>
    /// <returns></returns>
    public static bool EqualsIgnoreCase(this string s, string value)
    {
        return s.Equals(value, StringComparison.OrdinalIgnoreCase);
    }

    /// <summary>
    /// 首字母转小写
    /// </summary>
    /// <param name="s"></param>
    /// <returns></returns>
    public static string FirstCharToLower(this string s)
    {
        if (string.IsNullOrEmpty(s))
            return s;

        string str = s.First().ToString().ToLower() + s.Substring(1);
        return str;
    }

    /// <summary>
    /// 首字母转大写
    /// </summary>
    /// <param name="s"></param>
    /// <returns></returns>