Jonic Developer Community

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Welcome to Our Knowledge Sharing Community-Open, Learning,Share

Welcome to developer's Knowledge Sharing Community-Open, Learning,Share 欢迎来到程序员专属的知识分享社区! 一个分享知识，传递知识，学习知识的社区！...

asked Feb 5, 2021 in Others[杂七杂八] by ostack (1.4k points)

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233 views

1 answer

启动 docker-compose up --build 报错

...

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

0 votes

295 views

1 answer

SwiftUI NavigationView jumping back to previous view due to NSSortDescriptor

I have a note app with two views: TempNoteView and NoteView. In the NoteView after pressing the save button it updates the createdAt with the current date. However ... error = error as NSError fatalError("Unresolved Error: (error)") } } }...

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

0 votes

99 views

1 answer

angular中如何部分禁用插值语法{{}}？

如下 "{{obj | json}}" 效果为 {{obj | json}} 我期待的效果是 "{{obj | json}}" 效果为 {name: 'Cregskin',age: 20,job: ['student', 'frontend engineer']} ... 果为 {name: 'Cregskin',age: 20,job: ['student', 'frontend engineer']} 我这该咋办，angular小白求大佬解答?...

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

0 votes

1.1k views

1 answer

How to publish RTSP stream from ip camera with gstreamer?

I have a rtsp-simple-server running on Debian and I try to publish RTSP from my ip camera (h264 + pcm ulaw) to RTSP server with gstreamer. I tried ... location=rtsp://server.com:8554/camstream1 protocols=tcp How can I stream video + audio?...

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

0 votes

314 views

1 answer

python - Tesseract ocr output with single characters in between the detected text

I am trying to use Tesseract to extract from the below image, text = pytesseract.image_to_string(image, config='-c preserve_interword_spaces=1 --psm 1 --oem 1') ... anyone is familiar with such issue and have a solution please let me know....

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

0 votes

400 views

1 answer

javascript - How to use Jest __mocks__ to mock react-router-dom in a monorepo

I am unable to mock react-router-dom, I am seeing an error because the mock isn't being instansiated. Where am I going wrong?: I have a monorepo structured ... <Router> Which indicates to me that react-router-dom is no longer being mocked....

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

0 votes

240 views

1 answer

vue的适配问题，better-scroll

如图，可以左右滑动，页面布局用的rem,但是需要给出滑动的ul的宽width*length，之前width是用的px,我改成rem之后，qq浏览器没问题，uc上还会出问题，vue某个元素的宽怎么才能拿到。...

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

0 votes

158 views

1 answer

Hangman with Python. ( version: 3.9.1 )

So I was trying to create Hangman with Python and ran into a problem. The problems are as follows: The loop seems to be an infinite loop ( while loop ). Words with ... : print(f"You lost! The word was {guess_word}") else: print("You win!")...

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

0 votes

240 views

1 answer

java - Android memory: how to inspect memory without using Profiler?

I have a problem of OOM error (OutOfMemory) with my app. It seems that it is due to an object that takes more and more room in memory but I don't ... tools or methodology in order to help me finding which object grows in memory? Thanks !...

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

0 votes

416 views

1 answer

bazel如何编译.a静态库文件？

cc_library( name = 'jsf_api', hdrs = glob([ "**/*.hh", "**/*.h", ]), srcs = [ "lib/libjsf_provider.a", ], visibility = ["//visibility:public"], ) cc_library( name ... .a 其中，libjsf_provider.a是编译好的静态库问题发生在，引用静态库对应的头文件时，出现错误...

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

0 votes

353 views

1 answer

Api is not valid in app dealer plugin of woocommerce

I'm creating an Api for the App Dealer Store for wordpress but this plugin tell me is not valid How can I solve please this question? Thank you...

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

0 votes

442 views

1 answer

Java：请教这段代码中 lock 的究竟是哪个对象

public class Solution { public static void main(String[] args) { Lock lock = new ReentrantLock(); Thread t1 = new Thread(()->{ try { lock.lock(); System.out.println("线程一启动"); TimeUnit. ... 行请教在线程 t1 中的 lock.lock() 究竟是锁的哪个对象？没看到程序里有显式声明对象...

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

0 votes

637 views

1 answer

asp.net mvc - MVC Form DropDownListFor

In my view I am building a form where the user select a country from a list of Countries.I get this error about Object reference not set to an instance of an ... = FormInfo; } } catch (Exception e) { } return View(TemplateName, result); }...

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

0 votes

603 views

1 answer

Bind data to checkbox in angular material table using formcontrol. Data is available as list of true,false values

HTML <ng-container matColumnDef="view"> <mat-header-cell *matHeaderCellDef mat-sort-header>View</mat-header-cell> <mat-cell *matCellDef="let element; let i= ... which are in the material table(view column) according to values of view list....

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

0 votes

655 views

1 answer

codeblocks - Use pointer to sum numbers of element and stop after 0

Write a program using pointers that counts the number of elements that are nonzero and stops when a zero is found from the given array. Display the result using printf statement. array[] = {3, 7, 9, 8, 5, 1, 3, 0, 2, 1, 6}...

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

0 votes

709 views

1 answer

javascript - How can I filter a generated list from a query from PHP in JS?

I have a list of files from my database. I'm looking for a way to query them. but I'm receiving an error, which is... it only display the first item if my input matches ... ].style.display = ""; } else { b[i].style.display = "none"; } } }...

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

0 votes

813 views

1 answer

DialogFlow EX integration is not displayed

In DialogFlow ES, the display of integration is gone. Isn't the integration feature available in DialogFLow ES?enter image description here...

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

0 votes

1.1k views

1 answer

antd的treeSelect组件，怎么添加横向滚动条？

antd的treeSelect组件，怎么添加横向滚动条？...

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

0 votes

883 views

1 answer

r - Deactivate actionbuttons based on row length in a shiny app

I have the shiny app below in which when the user clicks on a row of the datatable a subset happens in another dataframe df and a text is displayed. When I press the Next ... "flower",dt$data[rnum(),2],"has score",dt$data[rnum(),3]) }) } )...

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

0 votes

944 views

1 answer

Jupyter运行matlab时中文乱码，该怎么办？

运行python，除了调用matplotlib时，中文显示都正常。...

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

0 votes

1.1k views

1 answer

flask多对多关系怎么根据关联属性进行排序或查找？

标签Tag和文章Post是多对多的关系，标签model如下： class Tag(db.Model): __tablename__ = 'tags' id = db.Column(db.Integer, primary_key = True) title = db.Column(db.String(64)) posts = db.relationship(' ... 别进行以下两个操作：根据post数量对tag进行排序获取所有post数量大于1的tag 该怎么写查询？...

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

0 votes

1.3k views

1 answer

chrome插件content-script如何发送消息到inject-script？

问题描述 chrome插件中，content-script如何将数据写进inject创建的div中问题出现的环境背景及自己尝试过哪些方法最近在做一个chrome插件，类似划词翻译用户在chrome任何页面划词选定词之后，将选定的词到百度翻译接口获取数据，然后在将翻译后的 ... 字符串 2.将获取的翻译的数据在content-script中通过window.postMessage函数发到inject中，inject用监听message的函数，结果为不行直接死循环 ...

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

0 votes

1.3k views

1 answer

el-transfer内容过长，鼠标悬浮显示完整内容

网上查了一个方法说可以这样写，但是我放到vue项目里就报错了，也试过了这样的写法， renderFunc(h, option) { return `${option.addr}` }, 不报错了，但是不显示内容，要怎么写才对？还有一种 ... ; target_el.title = target_el.innerText; }, 这个方法是可以显示的，也不报错，但是美中不足的是不该显示的内容都显示了 ...

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

0 votes

1.3k views

1 answer

concatenation - Insert Dynamic Value in URL from a Cell in Google Sheet

I am trying to build a URL in a cell (google sheets) which will get some of its values from different cells. I have tried using all different ways I can ... "Source":"Get Value from Cell A1" Any Help or guidance will be much appreciated...

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

0 votes

1.5k views

1 answer

javascript - unable to communicate between two applications loaded using iframes

I have one old angular js application. Currently I am developing each screen of this application in Angular 10 and loading those specific screens in old application ... screen 2. Can anyone please suggest in what way we can achieve this....

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

0 votes

2.0k views

1 answer

What are the descriptons for Huawei AdsKit AdListener.onAdFailed error codes?

What are the descriptions for Huawei AdsKit AdListener.onAdFailed error codes? It works as expected in test mode, but not in production. I'm ... ads and I/HiAdSDK.InterstitialAdManager: onAdFailed, errorCode:204 for interstitial ads....

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

0 votes

1.4k views

1 answer

请问没用任何打包或者构建工具开发的项目如何压缩代码？

如题，一个开发好的项目没用任何构建工具，就只有压缩css和js的需求该怎么实现？另外，如果用一些工具，比如webpack重新构建，是不是会很麻烦，要花很多的时间（项目是移动端）？...

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

0 votes

1.3k views

1 answer

reactjs - How do I pass Page title to the menu (like breadcrumbs)

I am trying to develop a mobile view for an application. I have menus on my footer component, I have header component, pages and subpages (component). import React ... menu (another component entirely). I want to know how to go about it....

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

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