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How to choose the id generation strategy when using JPA and Hibernate
...s of type long, short or int, given a named database sequence.
uuid
uses a 128-bit UUID algorithm to generate identifiers of type string that are unique within a network (the IP address is used). The UUID is encoded as a string of 32 hexadecimal digits in length.
guid
uses a database-generated GUID ...
Best practice for nested fragments in Android 4.0, 4.1 (
I'm writing an app for 4.0 and 4.1 tablets, for which I do not want to use the support libraries (if not needed) but the 4.x api only therefore.
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Scheduling R Script
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109
Actually under Windows you do not even have to create a batch file first to use the Scheduler....
Print a list of all installed node.js modules
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102
Use npm ls (there is even json output)
From the script:
test.js:
function npmls(cb) {
req...
ViewDidAppear is not called when opening app from background
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314
Curious about the exact sequence of events, I instrumented an app as follows: (@Zohaib, you ca...
C++虚继承的概念 - C/C++ - 清泛网 - 专注C/C++及内核技术
...类说明为虚基类。
◇语法：
class 派生类: virtual 基类1，virtual 基类2，...，virtual 基类n
{
...//派生类成员声明
};
◇执行顺序
首先执行虚基类的构造函数，多个虚基类的构造函数按照被继承的顺序构造；
执行基类的构造...
Passing a method as a parameter in Ruby
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100
You want a proc object:
gaussian = Proc.new do |dist, *args|
sigma = args.first || 10.0
....
How to put comments in Django templates
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answered Apr 6 '09 at 0:13
Van GaleVan Gale
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