public MemberInfo Login(MemberUdt member)
{
return(BookStoreException.TryThrow <MemberInfo>(() =>
{
return new MemberInfo();
}));
}
public IEnumerable <Book> GetBooks()
{
return(BookStoreException.TryThrow(() =>
{
return Enumerable.Range(1, 500).Select(item => new Book {
});
}));
}