public static bool TryGetValue <T>(this IReadOnlyDecoration decoration, IDecorationKey <T> key, out T value)
{
object _value;
bool found = decoration.TryGetValueTypeless(key, out _value);
value = found ? (T)_value : default(T);
return(found);
}
public static T GetValueOrDefault <T>(this IReadOnlyDecoration decoration, IDecorationKey <T> key)
{
T value;
if (decoration.TryGetValue(key, out value))
{
return(value);
}
else
{
return(default(T));
}
}
public static T GetValue <T>(this IReadOnlyDecoration decoration, IDecorationKey <T> key)
{
T value;
if (decoration.TryGetValue(key, out value))
{
return(value);
}
else
{
throw new KeyNotFoundException();
}
}
public static IDecoration Add <T>(this IDecoration decoration, IDecorationKey <T> key, T value)
{
return(decoration.AddTypeless(key, value));
}
