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reactjs - Error: Object has been destroyed when trying to re-open a second BrowserWindow - Electron.js

In an electron-react-typescript app I use a button in the mainwindow to open a new window. If I close this second window ... Object has been destroyed" .... So... any suggestions ?...

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

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Finding values in JSON type response (HTTP) in python

I have a json response {"length": 2, "chain": [{"index": 0, "transactions": [], "timestamp": 0, "previous_hash": ... " using the "test" value. How do I achieve this in python?...

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

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python - PYGAME - Move Character with Vector

I am teaching myself pygame and am looking at making my character able to rotate and then move in the direction they are ... .blit(pSprite.img,(pSprite.rect.x, pSprite.rect.y))...

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

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VUE treeTable 自定义方法怎么传递

### 问题描述早期element版本没有treetable vueadmin中有一种treetable的实现方法，其中有说可以传递自定义解析数据的方法，但是我通过prop传递方法一直报错 ### 问题出现的环境背景及自己尝试过哪些方法我试过在父组件同 ... 问题应该出在递归上，传到子组件方法执行一遍之后递归无效了，但这只是我个人的猜测，望大佬解惑...

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

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下拉option可以设置最大高度吗，超出显示滚动条

下拉option可以设置最大高度吗，超出显示滚动条...

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

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Looking for large latex file (~200 pages/1mb+) to test compression implementations

as the title suggests I'm looking for latex-specific files that are around 200 pages and 1mb+ in size. I've tried ... , or does anyone have one I could use? Thanks in advance...

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

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vue的seo问题

vue做的一个H5网站，有必要进行seo吗，还是做成多页面的，该怎么做...

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

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＜img/＞和<el-image>报错

ESLint: Disallow self-closing on HTML void elements (<img/>).(vue/html-self- 和 ESLint: Require self-closing on Vue.js custom ... "svg": "always", "math": "always" }], } }...

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

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多余文字查看更多怎么实现移动端

求思路通过js处理截取文字，怎么去判断文字截取到哪...

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

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4.0k views

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flutter provider - Bloc isn't found in the widget tree

Because the code is to big I will try and sum it up in words. This is the latest exception: Error: Could ... used multiple Builder widgets but I am always hit by this exception....

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

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rabbitmq 怎么获取unack状态的消息内容

rabbitmq 怎么获取unack状态的消息内容...

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

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前端导入excel，并且显示在页面，要求保留excel的样式，有没有啥解决方案？

现在用的是js-xlsx，也能在页面上显示, 但现在有个问题：我的excel字体是红色的，js-xlsx它读不出我的excel的样式，我现在看到个exceljs，这个exceljs好像node端用的，能在浏览器端用吗？注：单位项目用的技术栈是前段vue，后端java，前后端分离没人吗，我哭了...

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

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elasticsearch script 语法报错

elasticsearch版本：7.2.0...

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

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3.3k views

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vue __ob__.dep.id 该值是否是递增的？

如题，该值是不是递增的？现在值为 4575405 浏览器都报内存不足相关错误了，然后奔溃了...

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

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gradle - building AAR in Android Studio

It's my first time building AAR The official site says that All I hate to do is build APK and AAR will be ... $room_version" implementation 'com.google.code.gson:gson:2.8.2' }...

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

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一个前端标签问题

https://gongshang.mingluji.com/beijing/name/朗乐迅洁（北京）科技有限责任公司 https://gongshang.mingluji.com/beijing/name/硕链科技有限公司感觉每个注册资金的标签都不一样啊，这种怎么提取"资金" 标签呢？...

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

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项目中使用了Promise.allSettled ,如何兼容IE11

项目中使用了Promise.allSettled 然后提示 "对象不支持 allSettled 属性或方法" 项目中也配置了Babel "presets": [ [ "@babel/preset- ... "core-js/stable"; import "regenerator-runtime/runtime"; import "es6-promise"...

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

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electron app 在保存文件的时候,能否增加只读勾选框?

现在有个需求,我们的app项目文件会以JSON格式保存调用的是### dialog.showSaveDialogSync 额外有个只读的功能, 如果勾选的话, 则在JSON文件里增加只读字段但是electron提供的保存对话框似乎不能新增这种自定义的功能?...

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

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python - Must a class implement all abstract methods?

Suppose you have the following class: class Base(object): def abstract_method(self): raise NotImplementedError Can you then ... Will that give problems or is it just bad practice?...

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

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string matching on large file in R

I have a dataset of text entries with id-s. I have a list of match vectors, each consisting of words. I want to count ... of text with a lot of text just takes a very long time?...

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

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firebase authentication - Sign in with google is not working in android release version

I am using google sign in my app using firebase. Everything works perfectly with debug apk. but after submitting the close testing ... in". is there any else i should do or check?...

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

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4.0k views

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vue 中，如何优化v-for循环的，控制元素显示隐藏语句？

情景：数据列表中v-for 循环的，一些元素的显示隐藏依赖于数组中的字段，切判断的条件比较多，看着页面就不清爽，请问这些数据怎么处理，可以优化下呢？...

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

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3.8k views

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linux - Launch WebApp in Windows 10 from Docker container inside WSL2 (without Docker for Windows)

I have been faced certificate issue using Docker for Windows (With/Without Integration to WSL2). Here is the Link. ... Docker for Windows installed? I'll appreciate your guidance....

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

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3.8k views

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vue获取元素高度提示undefined

### 问题描述在使用滚动监听的页面 offsetHeight使用正常再切换到其他页面后提示"Uncaught TypeError: Cannot read property 'offsetHeight' of undefined" 再切换回原页面后同样报错 ### 问 ... }, ### 你期待的结果是什么？实际看到的错误信息又是什么？如何解决报错...

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

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3.8k views

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selenium元素找不到问题

操作是登录了一个网站（论坛）后，试图点击新页面中的一个超链接发现有一定概率会报错报错提示如下： selenium.common.exceptions. ... has been deleted entirely. The element is no longer attached to the DOM....

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

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如何写这个查询？

show columns from quote; Field Type Null Key Default Extra id int(8) unsigned NO PRI NULL auto_increment code text YES NULL date date YES ... and a.date = b.date; 效率很低，请问，如何改进？...

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

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3.8k views

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vue的中的方法为什么会死循环

<div id="app">  <div class="shortcut-box"> <div v-for="(item,value,index) in shortcut" > {{ index }} <div :style= ... } } } 这儿的count会无限增加，但是但是数据来说，应该只执行7次就够了 ...

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

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请问如何把import pandas 变成 import csv？

萌新一个。这里有一段代码，它能读取一个csv文件，筛选并绘制图表。需要把import pandas as pd 变成 import csv。请问怎样修改标红线的部分并使用DictReader才能实现该目的？或者需要修改更多地方？如果可以的话请讲的详细一些，谢谢！！...

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

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