extends

How to extend paper-dropdown-menu for a reusable custom element list?

由 五迷三道 提交于 2019-12-24 03:57:30
问题 I have a list of time zones that needs to be a reusable component. How do I make my list of time zones a reusable component in Polymer? I need this custom element to provide whether a time zone was selected (isSelected) and a function or property to get the selected time zone name. This is driving me mad! Thanks in advance. Below is a component file called, 'time-zones.html'. I removed all the BS JavaScript I was trying because clearly it wasn't working. The only thing working is the loading

extends not working in Django 1.9

由 我的未来我决定 提交于 2019-12-24 01:25:25
问题 When I add {% extends "X.html" %} to my child templates (the parent being "base.html"), only the parent template is loaded. When I take it away, the child template is loaded. I have another app where I have a seemingly identical inheritance structure, so I'm stumped. Here is "base.html": <!DOCTYPE html> {% load staticfiles %} <html> <head> {% block js %} <script src="{{ STATIC_URL }}js/jquery.1.12.4.min.js"></script> <script src="{{ STATIC_URL }}js/p5.js" {% endblock %} <title>myapp</title> <

Java - using the 'super' keyword

由 大憨熊 提交于 2019-12-22 06:59:21
问题 Simple question. I made a class called Tester1 which extends another called Tester2. Tester2 contains a public string called 'ABC'. Here is Tester1: public class Tester1 extends Tester2 { public Tester1() { ABC = "Hello"; } } If I instead change line 5 to super.ABC = "Hello"; am I still doing the exact same thing? 回答1: Yes. There's only one ABC variable within your object. But please don't make fields public in the first place. Fields should pretty much always be private. If you declared a

Getting Bitmap from Custom SurfaceView

由 会有一股神秘感。 提交于 2019-12-21 09:14:48
问题 I have this code in a class that extends surface view and implements runnable I am able to use the class basically allows you to draw to the canvas using different colors and such. I'm trying to get a method that will allow me to save the image after it is drawn and this is the method. No matter what i do i just get a black image with nothing on it. Any ideas? I have cache drawing enabled Objective get a bitmap image from a custom SurfaceView I have exhausted options of looking at some other

Collection<? extends T> vs Collection<T>

由 柔情痞子 提交于 2019-12-21 07:55:34
问题 After trying to understand the concepts at Spring MVC, I came across the expression Collection<? extends Book> which I have never seen before. I have tried to figure it out on my own, but I am seeing no difference between using Collection<? extends Book> and Collection<Book> . I was guessing that it only allowed for extensions of Book, but it does allow for Book as well. So scratch that. I have tried using Google, but since ? is a wildcard in google, it makes it nearly impossible to search

Issue with declaration of Map<String,Class<? extends Serializable>>

由 断了今生、忘了曾经 提交于 2019-12-21 05:05:04
问题 Java provides me by <? extends class> a way of filtering the java classes that you can use to build in this case the new HashMap, for example: I can do that: Map<String,? extends Serializable> map1 = new HashMap<String,String>(); It is correct, because String implements Serializable, so the compiler let me do that. But when i try to do it: Map<String,GenericClass<? extends Serializable>> map2 = new HashMap<String, GenericClass<String>>(); Being the GenericClass as it: public class

Java Inner Class extends Outer Class

由 给你一囗甜甜゛ 提交于 2019-12-20 19:34:09
问题 There are some cases in Java where an inner class extends an outer class. For example, java.awt.geom.Arc2D.Float is an inner class of java.awt.geom.Arc2D, and also extends Arc2D. (c.f. http://download.oracle.com/javase/6/docs/api/java/awt/geom/Arc2D.Float.html) Also, sun.org.mozilla.javascript.internal.FunctionNode.Jump extends sun.org.mozilla.javascript.internal.Node, which is a superclass of FunctionNode. (sorry... cannot find a link to the javadoc) To me, this seems odd. Could you then

PHP - Extending Class

由 守給你的承諾、 提交于 2019-12-20 10:00:58
问题 I've done lots and lots of code in PHP that is object-oriented, but up until now, all of my classes have been, "singular", I suppose you can call it. I am in the process of changing several classes (that have 5 or so identical methods) to extend one class (to rid myself of duplicate code). I am running into a few issues. I am trying to access a method in a parent class, but you can see the issue. Parent class: class DatabaseObject { public static function find_all() { return self::find_by_sql

PHP - Extending Class

由 梦想的初衷 提交于 2019-12-20 10:00:04
问题 I've done lots and lots of code in PHP that is object-oriented, but up until now, all of my classes have been, "singular", I suppose you can call it. I am in the process of changing several classes (that have 5 or so identical methods) to extend one class (to rid myself of duplicate code). I am running into a few issues. I am trying to access a method in a parent class, but you can see the issue. Parent class: class DatabaseObject { public static function find_all() { return self::find_by_sql

Column in extended table are not presented in form data on Eclipse Scout

由 岁酱吖の 提交于 2019-12-20 06:39:02
问题 I have Table field as Templates. For this Table field I have form data created with anotation @FormData(value = AbstractMyTableData.class, sdkCommand = FormData.SdkCommand.USE, defaultSubtypeSdkCommand = FormData.DefaultSubtypeSdkCommand.CREATE) public abstract class MyTableField extends AbstractTableField<MyTableField.Table> Inside MyTableField.Table I have n column and all of them is presented in form data for this field, so I can add rows like : int rowNum = formData.addRow(); formData
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