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How is the java memory pool divided?
...ap memory
The heap memory is the runtime data area from which the Java VM allocates memory for all class instances and arrays. The heap may be of a fixed or variable size. The garbage collector is an automatic memory management system that reclaims heap memory for objects.
Eden Space: The pool fr...
How do I use VaryByParam with multiple parameters?
...
You can use * for all parameters or a semi-colon separated list (VaryByParam = "customerId;languageId").
You can also use none if you didn't want it to cache different versions....
Here's a nice write up specifically for MVC.
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mysql create user if not exists
...alhost' IDENTIFIED BY 'password';
Note that the 5.7.6 method doesn't actually grant any permissions.
If you aren't using a version which has this capability (something below 5.7.6), you can do the following:
GRANT ALL ON `database`.* TO 'user'@'localhost' IDENTIFIED BY 'password';
This will ...
How to explain Katana and OWIN in simple words and uses?
...servers and web applications should be built in order to decouple them and allow movement of ASP.NET applications to environments which were not supported before.
Prior to OWIN, when building ASP.NET application, you were inherently bound to IIS due to the heavy dependency on System.Web assembly.
...
What is the difference between Unidirectional and Bidirectional JPA and Hibernate associations?
...s, so that you can access the other side without explicit queries. Also it allows you to apply cascading options to both directions.
Note that navigational access is not always good, especially for "one-to-very-many" and "many-to-very-many" relationships. Imagine a Group that contains thousands of ...
Temporarily disable Eclipse plugin
Is there a way to disable an Eclipse plugin without actually uninstalling it?
3 Answers
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What is the difference between include and extend in Ruby?
...end Mod. In this case the individual object gets Mod's methods even though all other objects with the same class as o do not.
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设置用户默认权限 Umask命令详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...22 = 644
注：权限计算实际上是二进制位的与操作，参考All About the umask and Permissions。
操作bar.tar
shell> tar xf bar.tar
这次有点不同，我们要运行两次tar命令。
第一次：以root身份运行tar命令，然后查看目录和文件的权限，分别...
Does JavaScript have “Short-circuit” evaluation?
... in times of JIT-compiling-magic in javascript implementations, one does really want to know if something is "the standard" , or potentially subject to the implementation. The way a condition statement with Binary Logical Operators is evaluated and (short-curcuit) is a standard behavior ecma-interna...
How to add image to canvas
...xt.drawImage(base_image, 0, 0);
}
}
I.e. draw the image in the onload callback of the image.
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