public static void TryAddSingleton <TService>(this ICoconaLiteServiceCollection services, Func <IServiceProvider, TService> factory)
{
if (services.All(x => x.ServiceType != typeof(TService)))
{
services.AddSingleton <TService>(factory);
}
}
public static void TryAddSingleton <TService>(this ICoconaLiteServiceCollection services, TService instance)
{
if (services.All(x => x.ServiceType != typeof(TService)))
{
services.AddSingleton <TService>(instance);
}
}
public static void TryAddSingleton <TService, TImplementation>(this ICoconaLiteServiceCollection services)
where TImplementation : TService
{
if (services.All(x => x.ServiceType != typeof(TService)))
{
services.AddSingleton <TService, TImplementation>();
}
}
public static void AddSingleton <TService>(this ICoconaLiteServiceCollection services, TService instance)
{
services.AddSingleton <TService>(_ => instance);
}