SpringBoot导出数据
Best practice for DAO pattern?
I\'ve seen a lot of codes use a service-dao pattern , I don\'t know the origin of this pattern . It force the front layer call service, then delegates some of the 开发者_如何学Cservice task to dao.[详细]
2022-12-23 13:56 分类:问答LINQ - Contains with anonymous type
When using this code (simplified for asking): var rows1开发者_如何学编程 = (from t1 in db.TABLE1[详细]
2022-12-23 12:15 分类:问答Never render a layout in response to xhrs
Most of the time I don\'t want to render a layout when the request comes from AJAX. To this end I\'ve been writing render :layout => !request.xhr? frequently in my controller actions.[详细]
2022-12-23 11:19 分类:问答Create new Rails project with previous rails version
The latest version of rails installed on my mac is 3.0.0.beta gem list returns rails (3.0.0.beta, 2.3.5, 2.3.4, 2.3.2, 2.2.2, 1.2.6)[详细]
2022-12-23 09:03 分类:问答How to write a let clause using the dot notation style
Using the q开发者_如何学编程uery expression style, the let clause can be easily written.My question is how to use the dot notation style to write a let clause. Essentially it\'s a Select (in most case[详细]
2022-12-23 08:25 分类:问答Does anyone know what happens if you do not implement iequtalable when using generic collections?
I asked a question here : When To Use IEquatable And Why about using IEquatable. From the msdn: The IEquatable(T) interface is used by generic collection obj开发者_如何学编程ects such as Dictionary([详细]
2022-12-23 07:25 分类:问答Using table-of-contents in code?
Do you use table-of-contents for listing all the functions (and maybe variables) of a class in the beginning of big source code file? I know that alternative to that kind of listing would be to split[详细]
2022-12-23 06:49 分类:问答What is the difference between trapping and handling an exception?
I\'m looking into exception handling in python and a blog post I read differentiated between trapping and handling an exception. Can someone explain the core difference between these two, both in pyth[详细]
2022-12-23 05:12 分类:问答Update Database from Entity Model without losing content
My question\'s title should tell you what I am asking about. Is there any way to update my database from an entity model without losing the inserted content?[详细]
2022-12-23 02:34 分类:问答