methods

问题 I have currently have a block of code that is repeated throughout my program inside Button Clicks with the exception of a few variables. The issue is that when I go from clicking one button to another button, plHTML starts leaking text from the previous button. This did not happen before I tried making the method. How can I prevent the variables from leaking into each other? This is the method I have attempted to make String firstPart; String lastPart; String secondPart; String cleanCombo1,

问题 This question already has answers here : How do I generate random integers within a specific range in Java? (65 answers) Closed 4 years ago . I have to select and return 1 random character out of a string using this method (separate from main method): public static char selectAChar(String s) I'm not sure how to select the random variable, and not sure if i should use a for loop. everything I've tried I couldn't get it to return the right variable type. EDIT: heres the coding i have so far

问题 class A { public function model($name) { if (file_exists($name.'.php')) { require $name.'.php'; $this->$name = new $name(); } } } class C extends A { function __construct() { $this->load = $this; $this->load->model('test'); $this->test->say(); } } $Controller = new C(); I want to create a simple code igniter like loader class. Is there a proper way for doing this technique? 回答1: You would use Fluent Interface pattern. <?php class Employee { public $name; public $surName; public $salary;

问题 I am trying to return an int and a list from a method from a class. but i cant make object of that class. so how should i do it. i try to do this : List listofObj = new ArrayList(); List list1 = some code that i can't share; Integer total = some integer value; listOfObj.add((List) list1 ); listOfObj.add((Integer) total); return listofObj; but when i use it in another class - if (listOfObj != null && listOfObj.size() > 0) { List mainList = promoData.get(0); --- gives error count = (Integer)

问题 I am getting into some serious OOP with Python and am running into some issues. I have a class with an initialiser, three private variables and set and get methods for each variable. Additionally, it has an input method that lets the user enter a value for the variables when they are called, rather than requiring an input call in the main function that passes a value to the class set method. This way I can immediately validate the user entry within the method specific to the data requirements

问题 I am developing a package and want to write two subset methods for objects of a custom class, myclass , with dispatch on two arguments, first one being the object to subset, of class myclass , and the second being either logical of character vector, like so: setMethod( f = "subset", signature = c(x = "myclass", subset = "logical"), definition = function(x, subset){ # function body } ) setMethod( f = "subset", signature = c(x = "myclass", subset = "character"), definition = function(x, subset)

问题 Why do some object methods/attributes not show up when I call dir on the object? Example: from scipy import sparse e = sparse.eye(2) 'H' in dir(e) returns False . But calling e.H works just fine (returning another sparse matrix object). Why is this so, and how can I see these hidden attributes? I'm using Python 3.5.1. 回答1: e.H , e.A , e.T are pseudo-properties of the sparse matrix object. shape is a property. In sparse.base.py I find shape = property(fget=get_shape, fset=set_shape) while the

问题 I am looking for a way to call a method inside a jquery function. Example : in the above code, how can I call the method() method from global scope? (function( $ ) { $.fn.test = function() { var method = function() { alert('test succeeded!'); }; } })( jQuery ); I tried with the following code: $(document).ready(function() { $(document).test.method(); // undefined }); But this does not help. Fiddle: http://jsfiddle.net/kB7mc/ 回答1: Your method is of local scope available inside the function

问题 I stumbled on a feature of C# method resolution that I didn't notice before. Namely, when I explicitly implement an interface that supports a setter, and the implicit interface only offers a protected set, the compiler sensibly defers to the protected set when I call it. So I get most of the convenience of auto-implemented properties, but I can prevent accidental modification of fields by clients who shouldn't be changing them. As an example, virtual public DateTime CreatedOn { get; protected

问题 i am trying to call a private method using java reflection i developed a small method to call the others methods iterating over all methods and comparing by name and by parameters type i have invoke 4 methods with success. i have one question. 1). is this the best way to do it?. because i understand class.getMethod only match public methods. Java have something built-in? here is my code. public class Compute { private Method getMethod(Class clazz,String methodName,Class...parametersClass) {