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Git Commit Messages: 50/72 Formatting
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284
Regarding the “summary” line (the 50 in your formula), the Linux kernel documentation has...
How to change height of grouped UITableView header?
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Return CGFLOAT_MIN instead of 0 for your desired section height.
Returning 0 causes UITabl...
Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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edited Aug 2 '17 at 10:42
a_horse_with_no_name
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Can I call a constructor from another constructor (do constructor chaining) in C++?
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C++11: Yes!
C++11 and onwards has this same feature (called delegating constructors).
The s...
How can I join elements of an array in Bash?
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edited Sep 4 at 21:18
answered Jul 24 '13 at 18:07
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Do I need elements in persistence.xml?
...d persistence classes.
In the case of Hibernate, have a look at the Chapter2. Setup and configuration too for more details.
EDIT: Actually, If you don't mind not being spec compliant, Hibernate supports auto-detection even in Java SE. To do so, add the hibernate.archive.autodetection property:
<p...
Implementing MVC with Windows Forms
...e seen are (including most combinations):
Directly talk to the database (2 tier)
Use a backend that has been written for the given application (3 tier)
Use a set of web services that were written for use by many applications and can’t be changed for your application. (Service-oriented architectu...
Using Transactions or SaveChanges(false) and AcceptAllChanges()?
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With the Entity Framework most of the time SaveChanges() is sufficient. This creates a transacti...
传感器组件 · App Inventor 2 中文网
...速度传感器
不可见组件，可检测振动并使用 SI 单位(m/s2)在三个维度上近似测量加速度。其组成部分是：
X分量：当手机静止在平坦表面上时为 0，当手机倾斜时为正向右（即左侧抬起），当手机倾斜到右侧时为负向左（...
What is digest authentication?
...03 Forbidden (access denied).
Digest authentication is standardized in RFC2617. There's a nice overview of it on Wikipedia:
You can think of it like this:
Client makes request
Client gets back a nonce from the server and a 401 authentication request
Client sends back the following response arra...