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Google Sheets: How to have the same values in column 4 whenever there are duplicate values in column 1?

The image explains what I would like to achieve probably the best: The table I would like to create, at the moment ... create the "New Volume" column. I would appreciate the help....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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how to see more than 5 labels in pie chart in tableau

I see only 5 labels even that i have 6 options - how can i solve it? the Malicious Bots are not shown in the labels....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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flutter - amplify_flutter any which doesn't exist (could not find package amplify_flutter at https://pub.dartlang.org),

I am trying implement amplify-flutter from this document but when i run pub get it showing "depends on ... .com/aws-amplify/amplify-flutter/blob/master/example/pubspec.yaml...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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upload.single('file')

在使用multer+upload在后台读取文件的时候总是报这个错误，后台的静态文件夹都能正常的创建成功但是就是报这个错误不在往下执行了！很是头疼。。。。。...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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gogs发送邮件使用465端口怎么发送?

发送测试邮件至 '[email protected]' 时失败：gomail: could not send email 1: address smtps://smtp.163.com:465: too many colons in address **邮件主机地址：** smtps://smtp.163.com:465...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python 中去除字典列表中的重复字典

找到一种可以去除list中重复的dict元素的方法，但是不大看得懂。麻烦大佬讲解一下 li = [{'a': 1}, {'b': 2}, {'a': 1}] li = [dict(t) for t in set([tuple(d.items()) for d in li])] 结果为： [{'a': 1}, {'b': 2}]...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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275 views

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JavaScript onclick 函数意外执行两次

有这么一个购物清单小程序大神可以打开Codepen查看我的代码 [Codepen] (https://codepen.io/vincentyolo/pen/LYNEodr?editors=1112 ) 我想添加一个X的按钮，当用户点击x就删除 ... 试了stopPropagation()也无果小弟新人真的不知道该查什么关键字了麻烦大佬们看看 ...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Curl : problem when I try to redirect output to file

I use this curl command to download a setup.exe : curl -k -u login:Password -O "https://url/to/my/setup.exe" I want to ... .txt But it doesn't work... Someone to show me ? Thanks !...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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456 views

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JavaScript中 bind函数返回的绑定函数可以作为构造函数，这样做的意义是什么？

const obj={} function f1() { } const f2=f1.bind(obj) const obj2=new f2() 这个obj2有什么特点呢和直接new f1()出来的对象有什么不同？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue.js - Cannot use 'in' operator to search for 'X' in undefined

Uncaught TypeError: Cannot use 'in' operator to search for 'USERS' in undefined I can't understand this line : use 'in' ... my axios response, but I do not know how to fix it....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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心态崩了前后端接口数据不一致

后端打印返回的数据是 {"code":0,"message":"成功"} 但是在前端F12后Network里面的Response是下面这个 {"code":0,"message":"成功","data":null}{ ... 下午7:33. Session timeout is set to 0 seconds (0 minutes) at"} 懵逼ing...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dolphindb support websocket, 以允许在electron页面上直接连接数据库

dolphindb support websocket, 以允许在electron页面上直接连接数据库...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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620 views

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vscode格式化，beautify应该怎么设置，花括号内的没有缩进，还是用其他插件？

安装了beautify插件，但是格式化之后，花括号里面的内容没有缩进，如图：添加这个配置也不管用 `{ "brace_style": "none,preserve-inline", "indent_size": 2, "indent_char": " ... "css": { "indent_size": 2 } } 应该怎么配置啊，需要安装其他插件吗 `...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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388 views

1 answer

关于echarts 里tooltip的问题？

场景如何让图中标识的三个点的tootip同时显示？ const options = { tooltip: { trigger: 'item', borderWidth: 1, alwaysShowContent: true, ... 度 shadowBlur: 0, } }, data: getPonitData(data.pointData) }] }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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420 views

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matlab - Get data from Serialport using Callback?

I am using this function: https://es.mathworks.com/help/matlab/import_export/use-events-and-callbacks-for-serial-port- ... graph (that′s the target) Thank you in advance :)...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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302 views

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reactjs - Usage of Trans Component of next-translate doesn't work following the example

I am experimenting with next.js and using next-translate library to achieve i18n support for my website. The ... Children.only expected to receive a single React element child....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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208 views

1 answer

我该如何优化这个句SQL？？

有一张快递单号表number，表中有大概5w条数据每次要使用时取出一条出来，语句如下 SELECT id FROM number WHERE status = 0 status 默认为0待使用 ... `); ALTER TABLE `number` MODIFY `id` int(11) NOT NULL AUTO_INCREMENT; COMMIT;...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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503 views

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react.js 在IE浏览器不同小版本有时候componentWillReceiveProps会不调用该怎么处理？

IE 小版本11.0.9600.19696IS 调用componentWillReceiveProps(nextProps)有时候会调不进去，是根据盘对象是否一样。但是IE 小版本11.0.9600.19696的确是正常的，求解...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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关于SpringBoot中的Converter

关于Converter只能转换表单提交的数据，如果是以Json的方式提交就不能转化了请问整个源码怎么分析啊这是我的Controller @PostMapping("/hello") public String hello( TestDtoWrapper dto) { ... 则正常显示希望大佬们可以告知~ 感谢! 参数上传成功转化参数转化失败...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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495 views

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文章段落评论功能怎么实现？

如上图所示，这样每一段可以评论的功能怎么实现？主要问题是: 段落和评论的映射用什么方法建立？想过用文字来对应评论。但是这样，文章更新时，之前的映射就错乱了。也想过依据修改后的文字的相似度来更新映射，这样是否靠谱？或者说更新后保留评论，让用户可以手动修改映射关系？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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393 views

1 answer

video 标签如何让快进快退不触发 onpause ?

当使用 <video /> 标签时我需要监听 onpause 事件执行某些操作但是发现当拖动视频的进度条快进快退时候， onpause 事件也触发了如何让它不触发呢？我只想监听播放暂停的暂停，不包括快进快退的暂停...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to meaningfully use additional properties of an assosiation prox object?

Consider a many-to-many relationship of Things where the order of the children (or parents) matters. So the association ... or is the associaton object useless in # this scenario?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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341 views

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swift - MapKit. Add multiple annotation by holding tap

How to add multiple annotations by holding down the tap on the screen. Of course, i need to lock the map screen first and then adding......

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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341 views

1 answer

组件库开发，less变量覆盖切换主题

我使用vue-cli4开发了一套组件库，想让它能够像iview一样能够通过覆写主题变量的方式换主题。vue.config.js和less该怎么配置别人安装依赖后可以通过less覆写变量的方式换主题呀。...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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170 views

1 answer

node.js - How to upload 2 images and access them individually on my Lambda using form-data on Postman

I am trying to upload 2 images to an API Gateway endpoint that I have created through Postman's form-data tab. I ... most relevant to my usecase. For example in the below image:...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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152 views

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swiftUI 中 frame 调用多次就会生成多层视图么

Color.white .frame(width: 38, height: 6) .cornerRadius(3) .frame(width: 130, height: 5, alignment: .leading) .background(Color( ... 着每次调用frame就会生成一层视图，还是说swiftUI有其他的原理？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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243 views

1 answer

Java NIO注册时的一个疑问

对相同的通道注册不同的相关事件返回同一个SelectionKey，但其特性又不一样，这是怎么实现的？ public class Server { public static void main(String[] ... ()=true keyCountB =1 set1 size=2 set2 size=1 key1==key2结果：true...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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165 views

1 answer

php - tFPDF - Show mySQL results in header

I am trying to show results of mysql in header in tFPDF. So far, i have manage to create the pdf but when i am ... : Undefined variable: Total in C:xampp...page.php on line xx...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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