public static TRank SetRank <TRank>(this IRanking <TRank> ranking,
Func <TRank, TRank> newRankFactory)
where TRank : struct
{
ranking.NotNull(nameof(ranking));
newRankFactory.NotNull(nameof(newRankFactory));
return(ranking.Rank = newRankFactory.Invoke(ranking.Rank));
}
/// <summary>
/// 异步设置排名。
/// </summary>
/// <typeparam name="TRank">指定的排序类型（兼容整数、单双精度的排序字段）。</typeparam>
/// <param name="ranking">给定的 <see cref="IRanking{TRank}"/>。</param>
/// <param name="newRankFactory">给定的新 <typeparamref name="TRank"/> 工厂方法。</param>
/// <param name="cancellationToken">给定的 <see cref="CancellationToken"/>（可选）。</param>
/// <returns>返回一个包含 <typeparamref name="TRank"/>（兼容整数、单双精度的排序字段）的异步操作。</returns>
public static ValueTask <TRank> SetRankAsync <TRank>(this IRanking <TRank> ranking,
Func <TRank, TRank> newRankFactory, CancellationToken cancellationToken = default)
where TRank : struct
{
ranking.NotNull(nameof(ranking));
newRankFactory.NotNull(nameof(newRankFactory));
return(cancellationToken.RunOrCancelValueAsync(()
=> ranking.Rank = newRankFactory.Invoke(ranking.Rank)));
}
