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Hibernate SessionFactory vs. JPA EntityManagerFactory
...EntityManager translate entity state transitions into SQL statements, like SELECT, INSERT, UPDATE, and DELETE.
Hibernate vs. JPA bootstrap
When bootstrapping a JPA or Hibernate application, you have two choices:
You can bootstrap via the Hibernate native mechanism, and create a SessionFactory vi...
Detailed 500 error message, ASP + IIS 7.5
...rs to browser", and click "Apply".
Under "Error Pages" on the home screen select "500", then "Edit feature settings" and select "Detailed Errors".
Note that the same steps apply for IIS 8.0 (Windows Server 2012).
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Apply multiple functions to multiple groupby columns
... group. When aggregating, g will be a Series. Passing g.index to df.ix[] selects the current group from df. I then test if column C is less than 0.5. The returned boolean series is passed to g[] which selects only those rows meeting the criteria.
In [95]: cust = lambda g: g[df.loc[g.index]['C']...
How to do joins in LINQ on multiple fields in single join
...d2}, (x, y) => x);
While the last argument (x, y) => x is what you select (in the above case we select x).
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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...q_connect (s, "tcp://192.168.0.111:5555");
/* Message routing */
const char data [] = "ABC";
zmq_send (s, data, sizeof (data), 0);
区分拓扑建立和消息路由严格地说不是不可缺少的。毕竟，混合这两个为一个单独的函数是很容易的：
zmq_send (s, "tcp://19...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...q_connect (s, "tcp://192.168.0.111:5555");
/* Message routing */
const char data [] = "ABC";
zmq_send (s, data, sizeof (data), 0);
区分拓扑建立和消息路由严格地说不是不可缺少的。毕竟，混合这两个为一个单独的函数是很容易的：
zmq_send (s, "tcp://19...
Visual Studio immediate window command for Clear All
...ace the mouse cursor in the Immediate Window.
Right click on the mouse and select "Clear All".
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How to find out which fonts are referenced and which are embedded in a PDF document
...e fonts embedded.
Using the normal Adobe Reader (or Foxit if you prefer). Select File->Properties on the resulting Dialog choose the Font tab. You will see a list of fonts. The ones that are embedded will state this fact in ( ) behind the font name.
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VIM Replace word with contents of paste buffer?
...ister you want (probably ") to put in the contents of that register.
"* - selection register (middle-button paste)
"+ - clipboard register (probably also accessible with ctrl-shift-v via the terminal)
"" - vim's default (unnamed) yank/put/change/delete/substitute register.
Short answer: "_cw^R"
Ed...
What specific productivity gains do Vim/Emacs provide over GUI text editors?
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Yeah, the mouse can be a timesaver for selecting areas of text, or moving the cursor to a specific spot in a large amount of text. Otherwise, it's a waste.
– T.E.D.
Jul 7 '09 at 14:27
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