C# 一些工具集优化使用（String，Random，Assembly，Json）
日常开发中会有大量时间接触例如：字符串、随机数、程序集、json等的场景，像字符串使用不当就会产生大量的GC通过封装一些静态的工具方法对这些常用的地方进行适当简单优化
1.Utility
为了使阅读代码的一眼就能看懂代码结构使用如下方式编写
csharp
public static partial class Utility
{
}2.Utility.Text
csharp
public static partial class Utility
{
public static class Text
{
private const int StringBuilderCapacity = 1024;
[ThreadStatic]
private static StringBuilder m_CacheStringBuilder;
public static string Format(string format,object arg0)
{
if(format == null)
{
throw new Exception("Format is invalid.");
}
CheckCacheStringBuilder();
m_CacheStringBuilder.Length = 0;
m_CacheStringBuilder.AppendFormat(format, arg0);
return m_CacheStringBuilder.ToString();
}
public static string Format(string format, object arg0,object arg1)
{
if (format == null)
{
throw new Exception("Format is invalid.");
}
CheckCacheStringBuilder();
m_CacheStringBuilder.Length = 0;
m_CacheStringBuilder.AppendFormat(format, arg0, arg1);
return m_CacheStringBuilder.ToString();
}
public static string Format(string format, object arg0, object arg1,object arg2)
{
if (format == null)
{
throw new Exception("Format is invalid.");
}
CheckCacheStringBuilder();
m_CacheStringBuilder.Length = 0;
m_CacheStringBuilder.AppendFormat(format, arg0, arg1, arg2);
return m_CacheStringBuilder.ToString();
}
public static string Format(string format, params object[] args)
{
if (format == null)
{
throw new Exception("Format is invalid.");
}
if(args == null)
{
throw new Exception("Args is invalid.");
}
CheckCacheStringBuilder();
m_CacheStringBuilder.Length = 0;
m_CacheStringBuilder.AppendFormat(format, args);
return m_CacheStringBuilder.ToString();
}
private static void CheckCacheStringBuilder()
{
if(m_CacheStringBuilder == null)
{
m_CacheStringBuilder = new StringBuilder(StringBuilderCapacity);
}
}
}
}2.Utility.Random
csharp
public static partial class Utility
{
public static class Random
{
private static System.Random m_Random = new System.Random((int)System.DateTime.UtcNow.Ticks);
public static void SetSeed(int seed)
{
m_Random = new System.Random(seed);
}
/// <summary>
/// 返回非负随机数。
/// </summary>
/// <returns>大于等于零且小于 System.Int32.MaxValue 的 32 位带符号整数。</returns>
public static int GetRandom()
{
return m_Random.Next();
}
/// <summary>
/// 返回一个小于所指定最大值的非负随机数。
/// </summary>
/// <param name="maxValue">要生成的随机数的上界（随机数不能取该上界值）。maxValue 必须大于等于零。</param>
/// <returns>大于等于零且小于 maxValue 的 32 位带符号整数，即：返回值的范围通常包括零但不包括 maxValue。不过，如果 maxValue 等于零，则返回 maxValue。</returns>
public static int GetRandom(int maxValue)
{
return m_Random.Next(maxValue);
}
/// <summary>
/// 返回一个指定范围内的随机数。
/// </summary>
/// <param name="minValue">返回的随机数的下界（随机数可取该下界值）。</param>
/// <param name="maxValue">返回的随机数的上界（随机数不能取该上界值）。maxValue 必须大于等于 minValue。</param>
/// <returns>一个大于等于 minValue 且小于 maxValue 的 32 位带符号整数，即：返回的值范围包括 minValue 但不包括 maxValue。如果 minValue 等于 maxValue，则返回 minValue。</returns>
public static int GetRandom(int minValue, int maxValue)
{
return m_Random.Next(minValue, maxValue);
}
/// <summary>
/// 返回一个介于 0.0 和 1.0 之间的随机数。
/// </summary>
/// <returns>大于等于 0.0 并且小于 1.0 的双精度浮点数。</returns>
public static double GetRandomDouble()
{
return m_Random.NextDouble();
}
/// <summary>
/// 用随机数填充指定字节数组的元素。
/// </summary>
/// <param name="buffer">包含随机数的字节数组。</param>
public static void GetRandomBytes(byte[] buffer)
{
m_Random.NextBytes(buffer);
}
}
}3.Utility.Json
1）IJsonHelper
csharp
public static partial class Utility
{
public static partial class Json
{
public interface IJsonHelper
{
string ToJson(object obj);
T ToObject<T>(string json);
object ToObject(Type objectType, string json);
}
}
}2）Json
csharp
public static partial class Utility
{
public static partial class Json
{
private static IJsonHelper m_JsonHelper;
public static void SetJsonHelper(IJsonHelper jsonHelper)
{
m_JsonHelper = jsonHelper;
}
public static string ToJson(object obj)
{
if (m_JsonHelper == null)
{
throw new Exception("JSON helper is invalid.");
}
try
{
return m_JsonHelper.ToJson(obj);
}
catch (Exception ex)
{
Debug.LogError(ex);
}
return null;
}
public static T ToObject<T>(string json)
{
if (m_JsonHelper == null)
{
throw new Exception("JSON helper is invalid.");
}
try
{
return m_JsonHelper.ToObject<T>(json);
}
catch (Exception ex)
{
Debug.LogError(ex);
}
return default;
}
public static object ToObject(Type objectType,string json)
{
if (m_JsonHelper == null)
{
throw new Exception("JSON helper is invalid.");
}
try
{
return m_JsonHelper.ToObject(objectType, json);
}
catch (Exception ex)
{
Debug.LogError(ex);
}
return null;
}
}
}4.Utility.Assembly
csharp
public static partial class Utility
{
public static class Assembly
{
private static readonly System.Reflection.Assembly[] m_Assemblies = null;
private static readonly Dictionary<string, Type> m_CacheTypeDic = new Dictionary<string, Type>(StringComparer.Ordinal);
static Assembly()
{
m_Assemblies = AppDomain.CurrentDomain.GetAssemblies();
}
public static System.Reflection.Assembly[] GetAssemblies()
{
return m_Assemblies;
}
public static Type[] GetTypes()
{
List<Type> results = new List<Type>();
foreach (System.Reflection.Assembly assembly in m_Assemblies)
{
results.AddRange(assembly.GetTypes());
}
return results.ToArray();
}
public static Type GetType(string typeName)
{
if (string.IsNullOrEmpty(typeName))
{
throw new Exception("Type name is invalid.");
}
if(m_CacheTypeDic.TryGetValue(typeName,out Type type))
{
return type;
}
type = Type.GetType(typeName);
if(type != null)
{
m_CacheTypeDic.Add(typeName, type);
return type;
}
foreach (System.Reflection.Assembly assembly in m_Assemblies)
{
type = Type.GetType(Text.Format("{0}, {1}", typeName, assembly.FullName));
if(type != null)
{
m_CacheTypeDic.Add(typeName, type);
return type;
}
}
return null;
}
}
}