private static T GetProperty <T>(Expression <Func <T> > property, Func <T> getter)
{
string name = property.GetMemberName();
lock (Properties)
{
if (!Properties.ContainsKey(name))
{
Properties[name] = CSharp.Try(getter);
}
return((T)Properties[name]);
}
}
public static bool TryConvertIPv4(IPAddress ipAddress, out uint address)
{
if (ipAddress.AddressFamily == AddressFamily.InterNetwork)
{
byte[] bytes = CSharp.Try(() => ipAddress.MapToIPv4().GetAddressBytes());
if (bytes?.Length == 4)
{
address = BitConverter.ToUInt32(bytes.Reverse().ToArray(), 0);
return(true);
}
}
address = 0;
return(false);
}
public static bool TryConvertIPv6(IPAddress ipAddress, out byte[] address)
{
if (ipAddress.AddressFamily == AddressFamily.InterNetworkV6)
{
byte[] bytes = CSharp.Try(() => ipAddress.GetAddressBytes());
if (bytes?.Length == 16)
{
address = bytes;
return(true);
}
}
address = null;
return(false);
}
/// <summary>
/// Validates a <see cref="string" /> that is a path.
/// </summary>
/// <param name="str">The <see cref="string" /> to be validated.</param>
/// <returns>
/// <see langword="true" />, if validation of <paramref name="str" /> succeeded;
/// otherwise, <see langword="false" />.
/// </returns>
public static bool Path(string str)
{
return(str != null && CSharp.Try(() => new FileIOPermission(FileIOPermissionAccess.Read, new[] { str }).Demand()));
}
/// <summary>
/// Validates a <see cref="string" /> that is a path.
/// </summary>
/// <param name="str">The <see cref="string" /> to be validated.</param>
/// <returns>
/// <see langword="true" />, if validation of <paramref name="str" /> succeeded;
/// otherwise, <see langword="false" />.
/// </returns>
public static bool Path(string str)
{
return(str != null && CSharp.Try(() => new FileIOPermission(FileIOPermissionAccess.Read, SingletonCollection.Array(str)).Demand()));
}