Recent questions in Technique[技术]

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如何在electron中集成npm或者说node 主要会执行命令行调用npm install 和 run 而用户的电脑不一定会有Node环境所以想集成进去目前有下载好Node文件放进去，调用execFile 以及一切Node执行命令的API都试过都是开发环境无任何问题打包后(并且删掉本地的node模拟无node环境)就不行请各位大佬指点...

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

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359 views

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c# - IServiceProvider that is not registered

When the application starts the error occurs The constructor of type ImportExportController contains the parameter with name ' ... ?????? Task.WaitAll(listTask.ToArray());...

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

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487 views

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python - PyQt5 inline documentation

When coding in python I look at the documentation provided with the code completion. Is it possible to get inline ... get it? The type of documentation I want for PyQt5:...

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

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459 views

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What is the unit SVG text coordinates?

H i all. Can someone explain me what is the unit of Svg text coordinates? And how we translate them to pixels? Thank ... ="position: absolute; left: 23.5625px; top: 195.987px">...

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

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475 views

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recursion - How to use return inside a recursive functions in php

Here is my question I am trying to create a random bar code for my application, I want to check if that code is ... I need to know what is wrong with the supplied code. Thanks...

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

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627 views

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javascript - (node:4) UnhandledPromiseRejectionWarning: Error: undefined is not a valid uri or options object

bot.onText(//igdl (.+)/i, async(msg, match) => { // 'msg' is the received Message from Telegram // 'match' is ... that the link is not valid.. does someone know how to fix this?...

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

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578 views

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supervisor 通过虚拟环境中的gunicorn运行程序提示找不到模块

非 root 用户，网站目录是 /home/www/web/ supervisor 配置文件： [program: weba] dirctory = /home/www/web/ command = /home/www/web/.env/ ... /.env/bin/gunicorn -w 4 'app:create_app()' 是OK的这是什么情况...

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

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660 views

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gradle - How to skip a specific migration

Does anybody know, how can I skip a specific migration using Flyway? I mean, to not execute and not write ... see records only for migrations V1, V3 in flyway_schema_history table....

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

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637 views

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es6 generator执行顺序

教程例子如下： function* dataConsumer() { console.log('Started'); console.log(`1. ${yield}`); console.log(`2. ${yield}`); return 'result'; } ... ，所以呈现为undefined 教程没详细解释整个流程，所以不清楚我思路错在哪里 ...

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

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594 views

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在这能有机会得到一个前端大师成为我的mentor吗

没有具体的问题. 之前学习过Vue,能写一些页面了. 因目前在学习React,因项目时间紧.想快速学习进入状态. 但是有一些概念性问题或者逻辑的理解不是到位. 如果每个问题拿出来问问题,又显得太琐碎. 同时对前端这些还是挺感兴趣的.所以未来还有不少问题和困难. 希望在这能找一位mentor. 可能你的三言二语就能帮助我尽快入门. 哪位兄弟姐妹可以帮忙吗?...

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

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711 views

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elementui的table组件中，type属性为selection的列不能v-if控制显示

### 问题描述 el-table-column，设type属性为selection后，不能通过v-if或v-show隐藏 ### 问题出现的环境背景及自己尝试过哪些方法 ### 相关代码粘贴代码文本 <el- ... scope)">查看</el-button> --> </template> </el-table-column> </el-table>...

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

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908 views

1 answer

mysql - "Duplicate entry" even though the column has UNIQUE constraint

I'm trying to drop some columns which I'm no longer using in my table. I've got a single column ... WHERE attackcode = "e3cce98b6aa8085ed6a960d2afcd4dca"; Empty set (0,00 sec)...

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

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1.2k views

1 answer

grafana - Filtering github project board cards by column

Is there a way to filter project board cards by column. For example I want to know how many cards are in every ... column. At the the moment I'm using grafana github data source...

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

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1.3k views

1 answer

android studio - Looking up a deactivated widget's ancestor is unsafe) flutter

this is my splash screen and I provide the future method to navigate automatically to another screen, class SplashScreen ... !!!!!! here Test breaks when using Future.delayed...

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

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1.2k views

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ibm cloud - Is Cloudfare Workers KV available from IBM CIS

is the Cloudfare Workers KV key value store available through IBM CIS? Thanks in advance for any advice....

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

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1.2k views

1 answer

Windows 环境命令行怎么使【*】以字符串类型传入可执行程序

...

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

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1.3k views

1 answer

I am having trouble with 'dlookup'

I am new at this so I apologize for any stupid questions. Objective: When the user selects a location (Combo box) for an ... ([QPC], "Item_Detail", "[ItemId]=15132-0A020") End Sub...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

1 answer

spring boot找不到maven install的jar包？

我已经用maven安装成功了 mvn install:install-file -Dfile=/usr/local/project/provider-user-0.0.1-SNAPSHOT.jar -DgroupId=com ... >system</scope> <systemPath>绝对路径</systemPath> </dependency>...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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react props解构传递，怎么修改部分并保持其他的不变？

假如上层的props是token=135 value=246，如果子组件需要全部传递到子组件的子组件可以直接使用{...props}的种方式，但是假如我需要修改token=147，但是value以及其他不变，怎么传递呢？...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.5k views

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请教vue如何将html字符串渲染成html元素

字符串： "<input v-model='info.content' />" 请问vue中怎么才可以将上面的字符串转换成html，并且保证v-model有效。谢谢！...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

1 answer

请问为什么我在游览器里输入JSON会得出对象值

s3={"name":"Lanny","age":"25","location":"China"} //结果{name: "Lanny", age: "25", location: "China"} 为什么结果不是{"name":"Lanny","age":"25","location":"China"}...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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swift - How to arrange a view in architecture MVC? When coding through code

I am studying architecture MVC and I write the interface through code. I am trying to link a VIEW and a CONTROLLER. But ... good example on github. Therefore, I have to turn to you...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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关于多线程中，线程获取的究竟是谁的锁

public class Sample { Lock lock = new ReentrantLock(); public void first() { // 当前线程连续持有 10 秒 sample 实例的锁 try { lock.lock(); for (int ... 个线程在竞争锁，但线程竞争的是 sample 对象的锁，还是 lock 对象的锁呢？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

jsonp解决跨域问题？

看了这篇文章 https://ostack.cn/a/11... 但是不是很明白既然包了一层回调可以传数据为什么直接传就跨域了。。。。...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

生成PDF html2canvas 截图内容（偶尔）不全

内容，向左上角偏移了，有时候刷新浏览器又好了，有时候刷新又不行...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

javascript - How to implement a secure implementation of chrome.tabs.remove()

Use case Existing web page / URL is opened from a 3rd party app. Upon completion of the work on the web ... sending the same message to the background script of the extension....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

android - How to compare JSONObject with a Query

How to compare this: search.setName(hits.getJSONObject(i).getString("name")); with: text.toString() Can you help me please ... (JSONException e) { e.printStackTrace(); } } });...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.2k views

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pandas数据新增一列计算连续次数

求教大神，想要计算一下一列中每一个数字连续出现的次数，请问有什么简单的方法吗？因为原始数据非常大，所以希望性能好一点，谢谢~ df1 = pd.DataFrame({'X': [1, 2, 2, 1, 1, 1, 2, 1, 1, 1]}) df1 希望生成以下的结果...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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