/// <summary>
/// Returns read only collection of given type
/// </summary>
/// <typeparam name="T">Type of collection</typeparam>
/// <returns></returns>
public static ReadOnlyCollection <T> ReadOnlyCollection <T>()
{
return(new ReadOnlyCollection <T>(Empty.List <T>()));
}
/// <summary>
/// Returns read only dictionary of given type
/// </summary>
/// <typeparam name="TKey">Type of key</typeparam>
/// <typeparam name="TValue">Type of value</typeparam>
/// <returns></returns>
public static ReadOnlyDictionary <TKey, TValue> ReadOnlyDictionary <TKey, TValue>()
{
return(new ReadOnlyDictionary <TKey, TValue>(Empty.Dictionary <TKey, TValue>()));
}
/// <summary>
/// If dictionary is null converts it into empty dictionary
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <param name="dict">Source dictionary</param>
/// <returns></returns>
public static IDictionary <TKey, TValue> Recover <TKey, TValue>(this IDictionary <TKey, TValue> dict)
{
return(dict ?? Empty.Dictionary <TKey, TValue>());
}