mirror of
https://github.com/GeWuYou/GFramework.git
synced 2026-03-22 10:34:30 +08:00
b2e8ed9787
- 移除 EnumerableExtensions 扩展类及其 Map、Filter、Reduce 方法 - 从 ControlExtensions 中删除 Match、MatchOrDefault、If、IfElse 等控制流方法 - 重命名 FunctionExtensions 中的 Memoize 为 MemoizeUnbounded 并更新文档注释 - 重命名 FunctionExtensions 中的 Partial 相关方法并调整参数命名 - 在 PipeExtensions 中移除 Pipe、Then、After、Let 等方法，保留 Also 方法 - 删除多个功能性类型扩展文件，包括 Option、Result、NullableExtensions 等 - 移除功能扩展的 README.md 文档文件 - 更新相关命名空间引用和依赖关系 - [release ci]
104 lines
2.8 KiB
C#
104 lines
2.8 KiB
C#
// Copyright (c) 2025 GeWuYou
|
||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
// you may not use this file except in compliance with the License.
|
||
// You may obtain a copy of the License at
|
||
//
|
||
// http://www.apache.org/licenses/LICENSE-2.0
|
||
//
|
||
// Unless required by applicable law or agreed to in writing, software
|
||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
// See the License for the specific language governing permissions and
|
||
// limitations under the License.
|
||
|
||
using System.Collections.Concurrent;
|
||
|
||
namespace GFramework.Core.functional.functions;
|
||
|
||
/// <summary>
|
||
/// 函数式编程扩展方法集合，提供柯里化、偏函数应用、重复执行、安全执行和缓存等功能
|
||
/// </summary>
|
||
public static class FunctionExtensions
|
||
{
|
||
#region Repeat
|
||
|
||
/// <summary>
|
||
/// Repeat：对值重复应用函数 n 次
|
||
/// </summary>
|
||
/// <exception cref="ArgumentOutOfRangeException">
|
||
/// 当 times 小于 0 时抛出
|
||
/// </exception>
|
||
public static T Repeat<T>(
|
||
this T value,
|
||
int times,
|
||
Func<T, T> func)
|
||
{
|
||
ArgumentOutOfRangeException.ThrowIfNegative(times);
|
||
|
||
var result = value;
|
||
for (var i = 0; i < times; i++)
|
||
{
|
||
result = func(result);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region Try → Result
|
||
|
||
/// <summary>
|
||
/// Try：安全执行并返回 language-ext 的 Result
|
||
/// </summary>
|
||
public static Result<TResult> Try<TSource, TResult>(
|
||
this TSource value,
|
||
Func<TSource, TResult> func)
|
||
{
|
||
try
|
||
{
|
||
return new Result<TResult>(func(value));
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
return new Result<TResult>(ex);
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region Memoize (Unbounded / Unsafe)
|
||
|
||
/// <summary>
|
||
/// MemoizeUnbounded：
|
||
/// 对函数结果进行无界缓存（线程安全）
|
||
///
|
||
/// ⚠ 注意：
|
||
/// - 缓存永不释放
|
||
/// - TSource 必须具有稳定的 Equals / GetHashCode
|
||
/// - 仅适用于纯函数
|
||
/// </summary>
|
||
public static Func<TSource, TResult> MemoizeUnbounded<TSource, TResult>(
|
||
this Func<TSource, TResult> func)
|
||
where TSource : notnull
|
||
{
|
||
var cache = new ConcurrentDictionary<TSource, TResult>();
|
||
return key => cache.GetOrAdd(key, func);
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region Partial (Advanced)
|
||
|
||
/// <summary>
|
||
/// Partial：部分应用（二参数函数固定第一个参数）
|
||
///
|
||
/// ⚠ 偏函数应用属于高级用法，不建议在业务代码滥用
|
||
/// </summary>
|
||
public static Func<T2, TResult> Partial<T1, T2, TResult>(
|
||
this Func<T1, T2, TResult> func,
|
||
T1 firstArg)
|
||
=> second => func(firstArg, second);
|
||
|
||
#endregion
|
||
} |