Sysnet.Common/Extensions.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

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

namespace Sysnet.Common
{
    /// <summary>
    ///     Contains general purpose extention methods.
    /// </summary>
    public static class Extensions
    {
        /// <summary>
        ///     Returns true if all items in the list are unique using
        ///     <see cref="EqualityComparer{T}.Default">EqualityComparer&lt;T&gt;.Default</see>.
        /// </summary>
        /// <exception cref="ArgumentNullException">if <param name="source"/> is null.</exception>
        public static bool AllUnique<T>(this IList<T> source) where T : IEquatable<T>
        {
            Util.RequireNotNull(source, "source");

            EqualityComparer<T> comparer = EqualityComparer<T>.Default;

            return source.TrueForAllPairs((a, b) => !comparer.Equals(a, b));
        }

        /// <summary>
        ///     Returns true if <paramref name="compare"/> returns
        ///     true for every pair of items in <paramref name="source"/>.
        /// </summary>
        public static bool TrueForAllPairs<T>(this IList<T> source, Func<T, T, bool> compare)
        {
            Util.RequireNotNull(source, "source");
            Util.RequireNotNull(compare, "compare");

            for (int i = 0; i < source.Count; i++)
            {
                for (int j = i + 1; j < source.Count; j++)
                {
                    if (!compare(source[i], source[j]))
                    {
                        return false;
                    }
                }
            }

            return true;
        }

        /// <summary>
        ///     Returns true if <paramref name="compare"/> returns true of every
        ///     adjacent pair of items in the <paramref name="source"/>.
        /// </summary>
        /// <remarks>
        /// <para>
        ///     If there are n items in the collection, n-1 comparisons are done. 
        /// </para>
        /// <para>