/// <summary>
/// 获得一个新的<see cref="KeyValuePair{TKey, TNewValue}"/>
/// </summary>
/// <typeparam name="TKey">旧Key类型</typeparam>
/// <typeparam name="TValue">旧Value类型</typeparam>
/// <typeparam name="TNewValue">新Value类型</typeparam>
/// <param name="oldKv"></param>
/// <param name="value">新Value/param>
/// <returns></returns>
public static KeyValuePair <TKey, TNewValue> NewValue <TKey, TValue, TNewValue>(
this KeyValuePair <TKey, TValue> oldKv,
TNewValue value)
{
return(KeyValuePairExtensions.New(oldKv, t => t, t => value));
}
/// <summary>
/// 获得一个新的<see cref="KeyValuePair{TNewKey, TValue}"/>
/// </summary>
/// <typeparam name="TKey">旧Key类型</typeparam>
/// <typeparam name="TValue">旧Value类型</typeparam>
/// <typeparam name="TNewKey">新Key类型</typeparam>
/// <param name="oldKv"></param>
/// <param name="key">新Key</param>
/// <returns></returns>
public static KeyValuePair <TNewKey, TValue> NewKey <TKey, TValue, TNewKey>(
this KeyValuePair <TKey, TValue> oldKv,
TNewKey key)
{
return(KeyValuePairExtensions.New(oldKv, t => key, t => t));
}