class

can an entire css “.class” have it's specificity as !important? [closed]

由 别等时光非礼了梦想. 提交于 2019-12-29 06:36:11
问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . I am working heavily in jQuery UI widgets and themeing is becoming hard because of an oversight that I need to work around. Consider this problem: <div id="node" class="ui-widget"> <div class="ui-widget-content">

Why make class members private?

由 倾然丶 夕夏残阳落幕 提交于 2019-12-29 06:30:14
问题 I've learn C++ for some time, however there is always this question which puzzles me (for years). In school, our lecturers like to declare class variables as private. In order to access it, we have to declare an accessor to access it. Sometimes we even have to make the different classes become "friends" into order to access its elements. My question is: Why make it so troublesome? What is the true rationale behind all the private and protected stuff when we can just make our life as a

Python: instance has no attribute

由 旧时模样 提交于 2019-12-29 05:46:05
问题 I have a problem with list within a class in python. Here's my code : class Residues: def setdata(self, name): self.name = name self.atoms = list() a = atom C = Residues() C.atoms.append(a) Something like this. I get an error saying: AttributeError: Residues instance has no attribute 'atoms' 回答1: Your class doesn't have a __init__() , so by the time it's instantiated, the attribute atoms is not present. You'd have to do C.setdata('something') so C.atoms becomes available. >>> C = Residues() >

How to call a non static member function from a static member function without passing class instance

由 情到浓时终转凉″ 提交于 2019-12-29 05:37:05
问题 I need to call a non static member function from a static member function of the same class. The static function is a callback. It can receive only void as data, though which i pass a char*. So i cannot directly provide the class instance to the callback. I can pass a structure instead of char to the callback function. Can anyone give eg code to use the non static member function in a static member function . and use the structure in the static member function to use the instance of the class

Change python mro at runtime

由 江枫思渺然 提交于 2019-12-29 05:27:05
问题 I've found myself in an unusual situation where I need to change the MRO of a class at runtime. The code: class A(object): def __init__(self): print self.__class__ print "__init__ A" self.hello() def hello(self): print "A hello" class B(A): def __init__(self): super(B, self).__init__() print "__init__ B" self.msg_str = "B" self.hello() def hello(self): print "%s hello" % self.msg_str a = A() b = B() As to be expected, this fails as the __init__ method of A (when called from B) calls B's hello

Parent Object in php

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-29 04:43:24
问题 is there a way to traverse an object to get the parent object data? With "parent object" I don't mean the parent class, but literally object. Here an example, in a javascripty world :-) : $parent->test = "hello world!"; $parent->child = new B(); It would be great If I could access all the data from parent in the child object: class B{ //I know this doesn't exists, but it's what I wanted do do function B(){ $this->parent = $this->parent(); echo $this->parent->test; //it would ouput "hello

Is it possible for class to inherit the annotaions of the super class

由 旧街凉风 提交于 2019-12-29 04:37:22
问题 I'm using Spring Framework transactional annotations for transaction managing and I have an abstract class annotated @Transactional as seen below: package org.tts.maqraa.service; import java.util.Collection; import java.util.Iterator; import java.util.List; import java.util.Set; import javax.persistence.EntityManager; import javax.persistence.EntityNotFoundException; import javax.persistence.PersistenceContext; import javax.persistence.PersistenceContextType; import javax.persistence.Query;

getClass method Java with array types

由 孤者浪人 提交于 2019-12-29 04:36:08
问题 So I've run into something odd and I don't know what it's called so I'm having trouble finding out information about it, hence my question here. I've run into an issue where if you create an array of any type and call getClass on this array in Java you will get an odd return. I am wondering why you get this specific return and what it means. Code example is as follows: byte[] me = new byte[1]; int[] me2 = new int[1]; double[] me3 = new double[1]; float[] me4 = new float[1]; String[] me5 = new

htm5+css3+js的动画效果

由 泄露秘密 提交于 2019-12-29 03:43:57
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> <title>圣诞主题</title> <link rel='stylesheet' href='http://img.mukewang.com/down/566a38a90001f17d00000000.css' /> <script type="text/javascript" src="http://img.mukewang.com/down/566a38f000016f0900000000.js"></script> </head> <body> <section class="container"> <!-- 第一幅画面 --> <section class="page-a bg-adaptive"> <!-- 男孩 --> <div class="chs-boy chs-boy-deer"></div> <!-- 月亮 --> <div class="moon"></div> <!-- 云 --> <div class="cloudy"></div> <!-- 圣诞树 --> <figure class="tree"></figure> <!-- 星星 --> <svg

class ClassName versus class ClassName(object) [duplicate]

由 隐身守侯 提交于 2019-12-29 03:39:05
问题 This question already has answers here : Python class inherits object (6 answers) Closed 2 years ago . What is the difference between: class ClassName(object): pass and class ClassName: pass When I call the help function of the module of those class you can read ____builtin____.object for the first case just under the CLASS title of help. For the second case it just shows the class name. Is there any functional difference between those classes and/or possible methods thereof? (I know that
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