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C# / CSharp Open Source » RSS RDF » GtkSharpRSS 
GtkSharpRSS » Rss » RssDefault.cs
/* RssDefault.cs
 * =============
 * 
 * RSS.NET (http://rss-net.sf.net/)
 * Copyright  2002, 2003 George Tsiokos. All Rights Reserved.
 * 
 * RSS 2.0 (http://blogs.law.harvard.edu/tech/rss)
 * RSS 2.0 is offered by the Berkman Center for Internet & Society at 
 * Harvard Law School under the terms of the Attribution/Share Alike 
 * Creative Commons license.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining 
 * a copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 
 * THE SOFTWARE.
*/
using System;

namespace Rss{
  /// <summary>Contains default values and methods for maintaining data consistency</summary>
  [Serializable()]
  public class RssDefault
  {
    /// <summary>Default value for a string in all RSS classes</summary>
    /// <value>empty string</value>
    /// <remarks>If an element in the RSS class library has the value of RssDefault.String, consider the element as "not entered", "null", or empty.</remarks>
    public const string String = "";
    /// <summary>Default value for an int in all RSS classes</summary>
    /// <value>-1</value>
    /// <remarks>If an element in the RSS class library has the value of RssDefault.Int, consider the element as "not entered", "null", or empty.</remarks>
    public const int Int = -1;
    /// <summary>Default value for a DateTime in all RSS classes</summary>
    /// <value>DateTime.MinValue</value>
    /// <remarks>If an element in the RSS class library has the value of RssDefault.DateTime, consider the element as "not entered", "null", or empty.</remarks>
    public static readonly DateTime DateTime = DateTime.MinValue;
    /// <summary>Default value for a Uri in all RSS classes</summary>
    /// <value>gopher://rss-net.sf.net</value>
    /// <remarks>If an element in the RSS class library has the value of RssDefault.Uri, consider the element as "not entered", "null", or empty.</remarks>
    public static readonly Uri Uri = new Uri("gopher://rss-net.sf.net");
    /// <summary>Verifies the string passed is not null</summary>
    /// <param name="input">string to verify</param>
    /// <returns>RssDefault.String if input is null, otherwise input</returns>
    /// <remarks>Method is used in properties to prevent a null value</remarks>
    public static string Check(string input)
    {
      return input == null ? String : input;
    }
    /// <summary>Verifies the int passed is greater than or equal to -1</summary>
    /// <param name="input">int to verify</param>
    /// <returns>RssDefault.Int if int is less than -1, else input</returns>
    /// <remarks>Method is used in properties to prevent values less than -1</remarks>
    public static int Check(int input)
    {
      return input < -1 ? Int : input;
    }
    /// <summary>Verifies the Uri passed is not null</summary>
    /// <param name="input">Uri to verify</param>
    /// <returns>RssDefault.Uri if input is null, otherwise input</returns>
    /// <remarks>Method is used in all properties to prevent a null value</remarks>
    public static Uri Check(Uri input)
    {
      return input == null ? Uri : input;
    }
  }
}
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