public static IContainerAdapter RegisterSingletonTypeIfMissing <TFrom, TTo>(this IContainerAdapter adapter)
where TTo : TFrom
{
{
Lokad.Enforce.Argument(() => adapter);
}
return(adapter.RegisterTypeIfMissing <TFrom, TTo>(ContainerRegistrationScope.Singleton));
}
/// <summary>
/// Registers a type in the container only if that type was not already registered.
/// </summary>
/// <param name="adapter">The extended adapter.</param>
/// <param name="fromType">The registration type.</param>
/// <param name="toType">The type implementing the registration type.</param>
/// <returns>
/// The <see cref="IContainerAdapter"/> with the newly registered value.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="adapter"/> is <see langword="null" />.
/// </exception>
public static IContainerAdapter RegisterSingletonTypeIfMissing(
this IContainerAdapter adapter,
Type fromType,
Type toType)
{
{
Lokad.Enforce.Argument(() => adapter);
}
return(adapter.RegisterTypeIfMissing(fromType, toType, ContainerRegistrationScope.Singleton));
}