网上演练贵港万达广场(人员密集)
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#if NET20 || NET30
namespace System
{
/// <summary>Encapsulates a method that has one parameter and returns a value of the type specified by the <typeparam name="TResult" /> parameter.</summary>
/// <typeparam name="T">The type of the parameter of the method that this delegate encapsulates.</typeparam>
/// <typeparam name="TResult">The type of the return value of the method that this delegate encapsulates.</typeparam>
/// <param name="arg">The parameter of the method that this delegate encapsulates.</param>
/// <returns>The return value of the method that this delegate encapsulates.</returns>
#if NETCF
public delegate TResult Func<T, TResult>(T arg);
#else
public delegate TResult Func<in T, out TResult>(T arg);
#endif
}
#endif