methods | 易学教程

how to reset a jquery animation to start over?

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问题 I have built a nice piece of code, some animation and some click/hover events, quite a small row of them. I intend to use it on multiple html-documents (it is a game, you have to get right answer and proceed with next question), built together in another html with full-page-slider (I don't want to load DOM multiple times, makes no sense): the unsolved question is: how to reset the code without actually reloading it? how to make it to clear everything so far and start over? I am a beginner,

Can a method within a class be generator?

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问题 Is it acceptable/Pythonic to use a method in a class as a generator? All the examples I have found show the yield statement in a function, not in a class. Here is an example working code: class SomeClass(object): def first_ten(self): for i in range(10): yield i def test(self): for i in self.first_ten(): print i SomeClass().test() 回答1: Yes, this is perfectly normal. For example, it is commonly used to implement an object.__iter__() method to make an object an iterable: class SomeContainer

Capture method calls in Java

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问题 I need to capture a method call in Java and I do not want to use JPDA or JDI; I want it to happen in the original JVM. For instance: public class A { public void m() {} } public class Main { public static void main(String[] args) { A a = new A(); a.m(); } } I do not want to actually let the method execute at the time, but need to capture it and schedule it in a queue. Thus, AOP will not help me in this regard. I thought about proxying the method. Something such as: public class A { public

Lazy loading class methods in PHP

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问题 I have a class with a few rather large methods. In it's basic and most common state most of the functionality is not required though, so I was wondering if there is a way of lazy loading just parts of the class. The methods need to be able to access private/protected members so it would be ideal if the methods were native to the class, however in looking for other solutions I came across this which discusses using private members in callbacks which would be a workable solution (I'd use

What is the point of using “send” instead of a normal method call?

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问题 as far as I understand 'send' method, this some_object.some_method("im an argument") is same as this some_object.send :some_method, "im an argument" So what is the point using 'send' method? 回答1: It can come in handy if you don't know in advance the name of the method, when you're doing metaprogramming for example, you can have the name of the method in a variable and pass it to the send method. It can also be used to call private methods, although this particular usage is not considered to

generic method to print all elements in an array

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问题 I wanna a method that would loop any type array and print them, I have written the following: public static <T> void printArray(T[] arr){ for(T t: arr){ System.out.print(t+" "); } System.out.println(""); } but this one only works for class arrays, what if I have a char[] instead of a Character[] , or a int[] instead of an Integer[] , or is there a way to cast them before hand? Thanks 回答1: java.util.Arrays.toString(array) should do. commons-lang also have that - ArrayUtils.toString(array) (but

Public functions vs Functions in CodeIgniter

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问题 In PHP, What is the difference between declaring methods inside class like public function VS function For example: public function contact() { $data['header'] = "Contact"; $this->load->view('admin/admin_contact', $data); } VS function contact() { $data['header'] = "Contact"; $this->load->view('admin/admin_contact', $data); } Is it better practice to use public function or function and why? 回答1: Methods declared with any explicit visibility keyword is best practice. It looks and feels better

Finding the sum of the values in a 2D Array in C#

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问题 Trying to build a method that will find the sum of all the values within the 2D array. I'm very new to programming and can't find a good starting point on trying to figure out how its done. Here is what I have so far (forgive me, I'm usually an english/history guy, logic isn't my forte...) class Program { static void Main(string[] args) { int[,] myArray = new int[5,6]; FillArray(myArray); LargestValue(myArray); } //Fills the array with random values 1-15 public static void FillArray(int[,]

Python: Making a class to use complex numbers

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问题 I am currently trying to write a program that deals with complex numbers. I have to use classes and methods. I am trying to be able to add, subtract, multiply etc., complex numbers, as well as compare them to one another. I think I have gotten a good start but have some issues. I have started each method, and I think I just need to fill in the gaps. In the method, I used self.x as a placeholder. I'm not really sure what goes there. First off, the program needs to create it's own complex

method call between different class in Objective c

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Is it possible to call method from one class to another where two classes from two different parent class. Suppose one from UIImage class and another from UIViewController class? Yes, one of the cool things about Objective-C is that you can call a method on any object, even if it doesn't respond. Although not as robust as in Objective-C's father, SmallTalk (yes, SmallTalk is the dad and C is the mom, don't ask), it's still pretty powerful. So let's say you have something like this: - (void)doSomethingToThis: (id)thisObject { [thisObject doSomething]; } Then later... //... UIImage *thisImage =