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Why is it not advisable to have the database and web server on the same machine?
...your DB, the maximum exposure is what your app can do through the database API. If you have a business tier in between, you have one more step between your attacker and your data. If, on the other hand, your database is on the same server, the attacker now has root access to your data and server.
Sc...
Difference between an application server and a servlet container?
...
A servlet-container supports only the servlet API (including JSP, JSTL).
An application server supports the whole JavaEE - EJB, JMS, CDI, JTA, the servlet API (including JSP, JSTL), etc.
It is possible to run most of the JavaEE technologies on a servlet-container, but ...
Input and output numpy arrays to h5py
...s directories. Each is named. You should look at the documentation for the API and examples:
http://docs.h5py.org/en/latest/quick.html
A simple example where you are creating all of the data upfront and just want to save it to an hdf5 file would look something like:
In [1]: import numpy as np
In ...
Why use bzero over memset?
...et (with three arguments). Almost
every vendor that supports the sockets API also provides bzero, and
if not, we provide a macro definition in our unp.h header.
Indeed, the author of TCPv3 [TCP/IP Illustrated, Volume 3 - Stevens 1996] made the mistake of swapping the second
and third argu...
What is the difference between List (of T) and Collection(of T)?
...ow - because method hiding won't be used by any code that uses a different API - i.e. Anything that looks for IList, IList<T>, List<T> etc. In short, you have no idea whether it will be called. Polymorphism fixes this.
– Marc Gravell♦
Mar 11 '11 a...
Java 理论与实践: 线程池与工作队列 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。清单 1 显示了简单的合用工作队列的示例。尽管 Thread API 没有对使用 Runnable 接口强加特殊要求，但使用 Runnable 对象队列的这种模式是调度程序和工作队列的公共约定。
清单 1. 具有线程池的工作队列
public class WorkQueue
{
...
Why aren't Java Collections remove methods generic?
...lemented as yourObject.equals(developer), as documented in the Collections API: java.sun.com/javase/6/docs/api/java/util/…
– Hosam Aly
Sep 9 '09 at 4:36
13
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How to implement a confirmation (yes/no) DialogPreference?
...internal.preference package, which means it is a part of Android's private APIs and you cannot access it from your application (private API classes are subject to change without notice, hence the reason why Google does not let you access them).
Solution: just re-create the class in your application...
Algorithm to detect intersection of two rectangles?
...ou call the method DoesThisRectSelectMe passing the selectedArea rect. The API convertRect: will do that job. The same trick works when you click on the NSView to select it. In that case simply override the hitTest method as below. The API convertPoint: will do that job ;-)
- (BOOL)DoesThisRectSele...
Python __call__ special method practical example
...
Django forms module uses __call__ method nicely to implement a consistent API for form validation. You can write your own validator for a form in Django as a function.
def custom_validator(value):
#your validation logic
Django has some default built-in validators such as email validators, ur...