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Kotlin泛型:如何访问同伴对象

I have 2 enums enum class Enum1{ X1, X2, X3, X4; companion object { val default = X2 } } enum class Enum2{ Y1, Y2, Y3; companion object { val default = Y3 } }

求求你,有人帮帮我!我需要用Java在Java中完成这个系统。银行会计制度。

Using your concepts about object oriented. (Create a aplication in JAVA presenting this menu:) 0 - Create account (simple) 1 - create savings account 2 - Criar bonus account 3 - Deposit 4 -

脸谱网发送API获取:没有找到匹配用户

I am trying to send a message from app to myself on facebook messenger and I get the error from: facebook send api getting : {"error":{"message":"(#100) No matching user found","type":"OAuthException",

嵌套SQL查询获取2个输出(超集和子集)

Newbie here - I need to get a table output that has one column with say, all the fruit names and another with say small fruits. There's no primary key in the table. I was trying something like this

For plotting graphs in R, I usually use basic plot plot(), barplot(), boxplot() functions from the package graphics. But ggplot is used more often I think. When/Why is it better to use ggplot

投掷队列退出内存错误“pthRead创建”

Every time i make a request i create a new Volley Request Queue: public void initializeQueue(Context context){ File cacheDir = new File(context.getCacheDir(), "Volley"); this.queue = new

使用AMQP/MRTT、消息代理和节点Red在Live Web页面上呈现数据

So basically I need to create a project where some sensors send out data through either MRTT or AMQP to some message broker, through Node-RED it needs to be written to a DB. Then i need to use the

如何获取S3桶AWS中所有图像URL的转储?

I am trying to get a dump of all image URL's from one S3 bucket on AWS. How would I do this? I have been trying below code, but I keep getting error 's3.ServiceResource' object has no attribute '

为什么函数在控制台中工作,而不是在$$(文档)中工作?准备好了吗?

This is probably best explained with the actual code here below. But I am scratching my head as to why I get: "Uncaught ReferenceError: djson is not defined" on pageload execution of loadresults but

如何在Android中添加FieldSt店分页

Please help me i need to add pagination in android firestore i have used base adapter to get events from firebase. i have read doc didn't find solution. DocumentSnapshot lastVisible =

ASP.NET应用程序Azure SQL通知更改

I am looking for a way to alert / notify my ASP.net application when a record is changed on my Azure SQL database. I am aware that Azure SQL databases do not support service service broker and this

如何定义EnUM为字符串?[复制品]

I have a simple class, called Vehicul which has three private members: marca,pret and tip and tip is a string. Then it's says that tip can be one of the values Bicicleta, Motocicleta, Trotineta. So,

Python 2中的参数

Hi I'm trying to run am object detection code written in python 3 on python 2.7. I have a problem in on the PEP 362 -- Function Signature Object which is only available from python 3.3. so I'm looking

在NoDE.js、Express、MunGDB Web应用程序中,我的重定向逻辑到配置页的故障获取结果

I am using node.js, express, and monogodb. I was trying to create a web app where when a user logged in it redirects to his profile page. I have created login logic and route as: //Show login Form

随机延迟下的Android广播接收机启动活动

I'm working on an alarm clock and I have a serious problem, the BroadCastReceiver always gets called exactly in time, I do some work like getting intent extras, nothing heavy or long and then I call

在DoCK化的Java Web服务中启动新进程

Is it possible to have an application containerized in a Docker container and then to create a new process at runtime? I have something like this: launchProcess() { Runtime runtime = Runtime.

如何将ASP.NET标签ID设置为变量

I'm trying to use a for loop to display posts, which works great as I can display information from my database, but the problem is all the tags for all the different posts will have the same 'id's

如何在UITababVIEW单元类中使用Table视图权限

In my swift project I have a tableViewController, with class TableViewController, and one prototype cell, with class TableViewCell. Now I want to use: tableView.reloadData(), or other function, in the

使用VS 2017的MyxExpUsix64 API调用中的非手动异常

Using Visual C++ 2017 version, the following sample code (as given in https://msdn.microsoft.com/en-us/library/bb384811.aspx ) is running with unhanded exception. // Compile this sample with: /EHsc

HTTP请求报头

What HTTP request headers are to be included in arduino while requesting for reading a text in a particular website? I requested reading text from google.co.in but didn't get proper answer. The

DROPZORD替换添加文件

How can replace added file in dropzone by click replace button. Codepen this is my codepen that i handle dropzone with jquery sortable. i want to add a button named replace to every file added to

当点击到画布时,使页面对键输入无响应

So I have a normal html page with php etc all that normal website stuff. Then I have a canvas with a html5 game on the page that is in a canvas and whenever I click into the canvas and play that game

如何使用MatPultLB

I wanted to make an animation of a random walk in 2D together with a histogram that updates as the steps advance. But I am only able to update the plot showing the walker, the histogram plot is just

如何在Rails中创建线图和出现数据?

I have column called speed in table Speed. I need to create a line chart group by minute (created_at) and point appear speed. For example p1 (110.4) , p2 (113.5), and more. There can be many values

HTTPS与非WWW在HTACC中的重定向

I have that htacces code, which is redirecting all pages without "www" to "www", except the main page. Also this code is redirecting all pages with "http" to "https", when I try to go for example to

IDE的C编程与RStudio类似吗?

I am trying to find an IDE for C programming similar to rstudio and rodeo. I like their environments which provide the auto-filling codes and you have access to all parameters and matrixes. Could

使用正则表达式输出文本文件中的唯一组合

I have a text file which contains characters like [tyy] .. ue:"yyyu" [tyy] . ue:"yyyu" [uyy] ..ue:"yyyu" [uyy] .. ue:"xu" [iyy] ue:"xu" [uyy] .

对Android应用编程最佳方式的建议

I am programming an Android application. I have two lists one for the machines and another one for the players. I would like to design a system where I can choose a machine and a player. After I will

我的代码不

I need to draw formulas after an applet has started, so I try to do the next: public class SearchIdeaApplet extends JApplet { private JPanel mRootPanel; private JButton mPrevButton;

NGO频频起火

This is very odd. I just build a component which is called gw-responsive-tabs that has an input variable which happens to be an Array of some object. When I deliver the input data from the html like

ReEX TestSo()当它在数组内通过时,失败的时间正好是50%。

I have an angular 4 pipe to sort an array of objects by the value in a specified property, the array will always originate from an mssql server. It is intended to sort strings as lowercase strings (

将一个ReaTjs应用程序动态加载到另一个ReACTJS应用程序

I'm building a reactjs application which needs to load another application on demand which is also in reactjs (imagine its a 3rd party application), I read about react-loadable (https://github.com/

JavaScript FixBaseCAN

I'm trying to create a user in firebase for my website using javascript and HTML and save i to the FirebaseDatabase like this: My HTML code: <head> <script src="https://www.gstatic.com/

滚动效果淡出

i want to make a text fadding in and out on scrolling but in a certain way. I already see a lot of questions but none answer what I want to do. I just saw this website and I would like to make a

Apache中别名的异常重定向

That is what I want to achieve: server.tld/nextcloud -> use a virtualhost for /nextlcoud alias www.server.tld -> wp.server.tld server.tld -> wp.server.tld The first thing is the exception.

Im looking for a node module to make a request. I see multiple different options that all seem pretty good, is there one that is considered the best, thanks.

从对象输出电源外壳中删除@ {}标签

I need help removing the @{} extensions from object output. The code bellow is listing the last modified file inside a folder. But the output is inside extension @{}. I have tried the Out-String but

将数据转换成时间线

Im trying to transform my data that currently looks like this: ]1 What I want it transformed into is for each User I want a timeline as to what process occurred first and when. Such as: I was

聚合物3网络组件在Safari中的拖放

When dragging a Polymer 3 Web Component in Safari 11.1 (MacOS) dragstart is immediately followed by a dragend event if dragging starts on a child in the Web Component's Shadow DOM. It works fine in

如何用PHP管理自定义错误消息

How can I put a custom error message with php? The x-moz-errormessage works great but not so the oninvalid="this.setCustomValidity. // Formular erstellen $Formular = $javascript . ' <br><p

编辑WordPress和WooCurrCE上的货到付款

I want to customise the code on the click on cash on delivery option in payment method on wordpress ecommerce website developed using woocommerce plugin.

Spring MVC无法映射URL

My dispatcher servlet is as follows <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

无法卸载Android应用程序:获取崩溃消息

i created an android app using Android Studio 3.1, and then installed it on a Samsung Galaxy S6 running on Android 7.0 Nougat. The problem is that i can no longer uninstall the app from my phone:

改善嵌套循环跨越两个大熊猫数据帧的性能

I have two very large data frames that is causing the following code to run extremely slowly. the check method checks if the first number from df1 is between the second two numbers from df2. If it

在UPDATE语句中,我们能减少两个子查询之间的冗余吗?

From Database System Concepts Suppose we have a relation funds_received(dept_name, amount) that stores funds_received (say, by electronic funds transfer) for each of a set of departments.

定制价格选项对每个产品进行订单评审

I am looking to charge some custom price for each product at order review section in magneto 1.9.I am adding check box for each custom price /product.once checked price should be updated in sub total &

如何在PHP包含图像的卷曲中发送头

i want to send ready header to remote server via cURL. can i? -----------------------------94634231838239954992124494 Content-Disposition: form-data; name="id" 1 -----------------------------

爪哇硒3.12.0

Why i am unable to run this java class of maven project? enter image description hereI am using selenium webdriver 3.12.0. when i try to run the class the eclipse is showing run configuration option.

使用向量的分割故障(核倾倒)

I got a segmentation fault (core dumped) in my Account 6. The program outputs 6 accounts in total (alternative between checking and savings accounts). Account 1 is checking accout and account 2 is

如何在Python中生成随机采样。有整数。给定的和和大小

Is there a direct function or any another way in python where I can generate random integers for my given size and I want to specify sum of those numbers as well. For example. I want to generate 7

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