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cucumber - Python Behave optional argument
I am trying to write a test using Cucumber (Behave). The 'given' statement needs to be able to take an optional ... use optional parameters? I am using a Mac on macOS Catalina....
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请问这个if用法在JavaScript什么意思呢?
// 获取当前选项卡ID function getCurrentTabId(callback) { chrome.tabs.query({active: true, currentWindow: true}, function(tabs) { if(callback) callback( ... [0].id: null); 是什么意思呢, 如果?? 就??...
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c# - Get push notifications quicker after device reboot
I'm using firebase for push notifications on both my android and iOS app with everything working fine. If I reboot the ... I doubt this would speed up the process of getting them?...
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vue axios 封装请求 遇到一个问题
当我页面访问出错的时候 我想获取后天返回的错误信息 获取不到 这是我封装的 import axios from 'axios' // import store from '@/store' import { Notify, Toast } from 'vant' ... 码 粘贴代码文本(请勿用截图) 你期待的结果是什么?实际看到的错误信息又是什么?...
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Route multiple components with the same base url in Angular
I am pretty new to Angular and I am creating an app that has nested information in pages (like in a file explorer) the ... it if you could explain it to me. Thank you in advance!...
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spring boot data jpa EntityExistsException
我用spring data jpa 写了两个多对多关系的实体Role和Permission,想在关系表里添加一些额外的字段,参考了这篇文章:JAP多对多最佳实践 一下时代码: Role 实体类 @Setter @Getter @AllArgsConstructor ... save()的动作,注释掉其中任何一个依然会报异常 麻烦大家 帮忙看看,谢谢了 ...
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客户端发送心跳包用http和socket的区别
客户端发送心跳包是用http还是socket,两者各自的优缺点是什么?...
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angular - How to create a chart with chart.js by using data from external api
I have got some data from externel API using http get request. The code is this, export class ProfileComponent implements ... of line chart. I am a beginner in web development....
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在重量级锁的情况下等待池里的线程被notify以后会进入什么状态?
是关于synchronized关键字的使用 1.对于重量级锁线程在未竞争到锁时会被阻塞,然后以阻塞(blocked)状态进入锁池(Entry Set)中,等待锁释放,并重新竞争锁 2.对于执行到wait()方法的线程 ... 或者当notifyAll()方法被调用时,Wait Set中的全部线程会转变为RUNNABLE状态 这一点让我感到很疑惑...
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server - How to check the deliverability of my outgoing email (spam, dkim, dmarc, spf)
The project I'm working on is a newsletter builder, and I'm on its final steps. Now I need to verify spf dkim and ... their domain but I don't think they gave me access to that....
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plugins - Subscription based payments via SEPA payments in wordpress
Is there any wordpress plugin that makes it possible to sell 'subscriptions' via recurring payments via SEPA payments ... pay monthly or yearly by SEPA payments. Greetings, Laurens...
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javascript - Automaticly update component when item delete
Problem I have code which deletes a component. It works, but when I click delete button, I need to reload browser to ... default: return <Loader />; } }; export default Albums;...
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elasticsearch complement multi input
对于 type 为?completion 的类型, 允许 input 输入数组, 那么查询的时候, text 是依据什么规则从 input 数组中选出的呢? { "text": "zhang san", "_index": "mymapping ... ": [ "张叁", "张三", "zhang san" ], "weight": 50 } } }...
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前端面试算法题,选马问题,面试没成功。请问我写的有什么问题,希望各位指点点
第一题:选马问题 题目描述: 有两组马 A 和 B,每一组都有若干匹马 假设所有的马跑的速度都是匀速, 请从两组马中选出跑步速度最接近的两匹马 输入数组 A 和 B,其中 A[i]和 B[j]分别是 A 组第 i ... 1, 7, 5, 3, 10]; let B = [4, 2, 9, 6, 3]; let result = select(A, B);...
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aiomysql数据库连接池不能正确读取数据?
问题描述 用数据库连接池查询数据的时候,如果手动更改数据库数据,再次查询时的数据为之前的未更改的数据 问题出现的环境背景及自己尝试过哪些方法 python3.7 aiomyqsl 0.0.20 相关代码 ... () loop.run_until_complete(test.run()) 你期待的结果是什么?实际看到的错误信息又是什么? 执行结果...
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python - Dice Rolling Game - List to store dice rolling results
I am working on dice rolling game which prints out the number of attempts (n) before both dice shows the same value. ... The past record of dice rolling as below: ") print(record)...
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求商品规则笛卡尔积算法
题目描述 $arr = [ [ "title"=>"颜色", "value"=>["黑色", "白色"] ], [ "title"=>"尺码", "value"=>["S", "M","L"] ], [ "title"=>"长度", " ... "白色" ["尺码"]=> string(1) "L" ["长度"]=> string(6) "长裤" } } }...
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service - Android - Good Practice Activity and Lifecycle
I working on a library project and I'm facing some "issues", I don't have setup Dagger, RX or any of these ... a lot for reading me and maybe participate to the discussion :)...
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同样是字母“o”,为何识别不了
今天发现的最诡异的bug 上下两段的代码一模一样(这么缩进是为了方便同屏比对) 然而下一段的代码可以正常运行,上一段的无法使用 肉眼对比无果后,用Ctrl+F逐行比对,最后发现问题在第一个 onkeydown 的第一个字母 ... ><body></body></html> (如图,我在这里Ctrl+F也是同样的结果,并且改完那个 o 代码就正常运行)...
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monaco editor - How to create rule for "todo" in a comment
I tried these rules for a custom language, in which comments are C# like. I want to match word "todo" when it is in a comment ( ... @pop'], [/todo/i, 'keyword.todo'], ], //.......
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electron桌面通知的图标出现滚动条
electron的桌面消息通知 的图标设置的是60*60 但是 出现了滚动条 这个有人遇到过吗 if (args.icon) { args.icon = await electronImageResize({ url ... , width: 60, height: 60, }) } const notify = new Notification(args)...
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本站的live视频不能看了
本站的live视频从上周六就不能看了,到现在还没解决,什么时候能解决下,具体问题是打开live提示后端服务故障...
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Add a column with NULL values in Tableau Prep
I am using Tableau Prep to load PDFs to SQL server. The PDF contains several tables. All the columns except the one ... there another way to accomplish this? Thank you in advance....
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vue项目,修改后保存,编译太慢如何解决?
用vue做了一个项目,前前后后差不多一年时间了,现在有个问题,就是编辑一个文件后,保存,然后等着编译(超过 20s)再刷新页面,这个过程耗时太久了,网上查了一圈,几乎都是修改webpack ... babel-plugin-dynamic-import-node --save-dev 修改配置: 会卡在这个步骤(大约 13s,之前的过程大概8s):...
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python - pip freeze > requirements.txt creates the text file but the file is empty
Okay so I want to host my discord bot in Heroku but for the requirements.txt when I use the command pip freeze > ... the Cmd it creates the file but with no text in it...
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Go 语言中,类型对应的结构体成员一样时,它们的底层类型就是一样的吗?
比如存在下面两个类型 A 和 B: type A struct { x, y int } type B struct { x, y int } 此时,类型 A 和类型 B 对应的结构体成员是一样的,那么,A 和 B 拥有的是不是 同一个 底层类型呢? 就像这样: A B / / / struct { x, y int }...
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webpack中chunk和assets有什么区别?
webpack中的assets属于什么概念,和chunk有什么关系?...
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LinkedBlockingQueue如何保证多线程环境下head和last字段被安全初始化
阅读过《java并发编程实战》的人应该知道 由于StoreStore重排序和编译器的优化作用,构造函数中的赋值语句可能会被 重排序到被构造对象引用赋值之后 这样在多线程环境下,对象被发布出去,可能得到的是一个部分初 ... x86平台是没有任何操作的 至于伪代码 可以看我在下面的评论 我的结论:LinkedBlockingQueue需要自己保证安全初始化!...
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