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Buy Bactrim Without Prescription, Actually, this article is posted about one year before, at here. Today, I happened to see this article, fast shipping Bactrim, interesting. Bactrim images, So, I found my old entry and post here. Also, buy cheap Bactrim no rx, I post all the comments at the end, Where can i cheapest Bactrim online, it's really valuable I think.

Recently(2004.08.06), a friend of mine discussed the Event handle issues in C# and Java with me, no prescription Bactrim online, sounds interesting. I would like to blog the discussion and my investigation here, Buy Bactrim Without Prescription. Bactrim interactions, C# (pronounced C Sharp) is a programming language developed by MS as part of its .NET platform. When I saw it the first time, I ask myseft:"is it another version of Java?", buy Bactrim without prescription. Just a joke, Bactrim online cod, C# is extremely similar to Java: GC, VM, single inheritance, order Bactrim from mexican pharmacy, interfaces, Bactrim cost, packages(use "using" instead of "import" :P), pure OO etc. However, Bactrim natural, C# also invent many new features, Buy no prescription Bactrim online, delegate is a famous one. Buy Bactrim Without Prescription, Ok, let's talk about the event-handle issues. In Java, we use the well-known Observer Pattern (Gamma et, Bactrim australia, uk, us, usa, Design Patterns) to implmented the events. Bactrim without a prescription, For example, if we wanna to handle the Button's Click event, we simply add a ActionListener to this button:

[code lang="java"]
JButton button = new JButton("ok");
button.setActionCommand("ok");
button.addActionListener(new Handler());
....., Bactrim dose.

class Handler implements ActionListener {
public void actionPerformed(ActionEvent ev) {
String command = ev.getActionCommand();
if (command == "OK") {
onOK();
}
...... Bactrim dangers, }
}
[/code]

Or we can even add listener in following way:

[code lang="java"]
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
String command = ev.getActionCommand();
if (command == "OK") {
onOK();
}
......
}
});
[/code]

In C#, Anders Hejlsberg introduced the new keyword "delegate", I think it's actually like the type-safe function pointers, Buy Bactrim Without Prescription. Anders really love the function pointers, he bring this to Delphi & Visual J++ too, Bactrim samples. Let's first take a look at how this keyword works:

In Java, Bactrim brand name, Since the listener rely on the interfaces, so, we can not call the methods without knowledge of the target object, doses Bactrim work. For example:

[code lang="java"]
public class Class1 {
public void show(String s) {};
}

public class Class2 {
public void show(String s) {};
}
[/code]

A more complex example is the method whose name can be variant, Is Bactrim addictive, you can find detail information in this article.

Although these two classes have common method, but because they do not share a common interface, cheap Bactrim, so, Buy Bactrim without a prescription, we can not call them in a uniform way. Buy Bactrim Without Prescription, How to solve the problem. In Java, we can use the Proxy Pattern(Gamma et, Bactrim blogs, Design Patterns) and Adapter Pattern(Gamma et, Where can i find Bactrim online, Design Patterns) or use the reflection mechanism to solve the problem. In C#, ok, order Bactrim online overnight delivery no prescription, it's delegate's work. Bactrim description, [code lang="java"]
public delegate void show(String s);

show s1 = new show(new Class1().show);
s1("Test");
s1 = new show(new Class2().show);
s1("Test");
[/code]

The most important usage of delegates is for event handling:

[code lang="java"]
Button button = new Button();
button.Click += new EventHandler(onOK); // BTW: we can see, method is the first-class object in C#.

private void onOK(...) {
....., Bactrim trusted pharmacy reviews.
}
[/code]

Ok, that is the mechanism C# handle events, Buy Bactrim Without Prescription. How about it. Bactrim pics, I think everyone has his cents. In my opnion, at the first look, order Bactrim online c.o.d, it's very attractive to me, Bactrim alternatives, things get easy now. But soon I feel uncomfortable. Buy Bactrim Without Prescription, I don't think this function pointer-like mechanism should exist in a pure OO languages :P. So, where can i buy cheapest Bactrim online, I would rather to use patterns to keep the code clean. Generic Bactrim, To summarize:
At the above situation:
1) If I can controll all the code, then I would rather retrofit a common interface that has "show" method;
2) If things are not that easy, for example: all classes are library codes, what is Bactrim, or method has different name, Kjøpe Bactrim på nett, köpa Bactrim online, I'd like to use adapter and proxy pattern to solve this problems.

Just my cents. :-)

Woty - not bad, Bactrim for sale. delegate is some how usefule, Buy Bactrim Without Prescription. but i think method should not be the first-class object. In common OO theory: Class := data + operation on data. if member operation is first-class, how about member varible?

Mijia - I think the delegate is just the wrapper for the function pointer or callback function in C/C++, which cannot be appeared in Java or C#, because they have their restrict security architecture. As well as first class object discussed, I do not know the exact ly defined concept, so I could not tell which idea would be correct. Buy Bactrim Without Prescription, But I would like to regard it like that callback function or function pointer seems very dangerous in C/C++, but it is a fantastic mechanism which could provide flexibility for the software design. And I think Anders Hejlsberg from the C# loved it the most, so he cannot resist to add such mechanism into C#. But in Java, for the consideration of security, the function pointer is strictly forbidden, but Java could use the Reflect to emulate the behavior of the callback function or function pointers. And it is simple and flexible as well. So I think perhaps "function as first class" may be not pretty in the view of grammar or sementics, and in C# it is just one's idea, some camouflage beneath the security flag.
.

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