Recent questions in Technique[技术]

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vue 响应式原理之v-for 是如何实现的？

https://www.jianshu.com/p/0d8a9a238dd6 楼主参照上文尝试解析了一下 vue响应式基本原理，但是今天在尝试编写 v-for的时候遇到了阻碍，一时无法下手了，请大佬指教！！！...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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alpine 配置多个镜像源，是否会根据网络优先选择？

假设我在 /etc/apk/repositories 中配置多个镜像源(国内，国外)，主要有几个问题：是否会根据线路优先选择镜像源 apk add 中途安装失败，是否会使用另一个镜像源处理 apk add 中途安装失败后(下载失败)，如何退出执行...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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能否不开启Apache之类的，直接在游览器里访问127.0.0.1打开网页。

能否不开启Apache之类的，直接在游览器里访问127.0.0.1打开网页。我打开都是被拒绝。开了80端口。...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Excel VBA: Wrong position when copying Shape.Top position between worksheets in a loop

I am copying a bunch of shapes and their position between worksheets. One of the shapes, however, does not ... vertical positition is lower than the original. Pasted: original:...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python对于excel数据按照标签进行分组处理

最近做的利用百度api对路线进行路径纠偏，由于本人实在小白遇到很多问题数据是这样的，其中imsi有八十个不同的对于路线纠偏的代码如下 import requests url = "http://api.map.baidu.com/rectify/ ... 觉还是有点复杂或者能不能将数据按照imsi输出成这样：这样我一个一个输入也会方便一些，泪目...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Alternatives to geopandas for clipping shape file

I am trying to create shape files for the road network in London, I have downloaded shape files for the road links ... to geopandas? does anyone have any advice? Thanks in advance...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to convert DateTime to Date in MongoDB for filtering?

I am a newbie to MongoDB and having a hard time querying documents with simple filtering. I would like to ask if ... ()); Im still trying to understand this Aggregate in MongoDB....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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php json_decode解码的问题

不能用数组访问，这种要如何访问，大佬解答下，还有我明明转成数组了，为什么会报错...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue在数据没有请求回来的时候，不渲染页面

vue在数据没有请求回来的时候，渲染了一次无数据页面，所有值都是undefined，当数据请求回来之后，又渲染了一次有数据的页面，请问如何让页面没有数据不渲染...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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js取出对象里面的值以后变成新数组

我希望取出如下图中List对象里面的key对应的value里面的值，然后变成一个新数组: 最后的结果:...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How can `prometheus-operator` export dashboards to an external grafana?

I use the official helm chart prometheus-operator and want to use grafana helm chart as an external application. ... the base dashboards from prometheus-operator into my grafana?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python 3.x - can't update python3.6 to 3.9 in jupyter notebook

i installed python3.9.1 on my laptop and updated the alternatives for python3 which now is running python3.9 ... import main ModuleNotFoundError: No module named 'pip._internal'...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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如何实现类似codepen这种在线编辑代码并运行的功能

有没有插件可以直接实现类似功能？支持多种语言，服务端执行，前端这边实现编辑和提示的功能。...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue cli 3.0 配置url-loader的问题

使用JPG格式的图片时报错 <img class="film-image" src="~@/assets/images/CT.JPG" alt="" > jpg格式的文件就没问题，这还分大小写的？网上查了下需要安装配置file-loader和url- ... 置，别的格式的图片都可以，就这个JPG格式不行，vue cli 3.0的写法不太熟，请大佬指教 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Matplotlib 3.3.3: Changing the color of single ticks not working anymore

I upgraded to matplotlib 3.3.3 and I can no longer change the color of a single tick when plotting. Using matplotlib 3.2. ... .3.3 only changes the size of the tick, not its color....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Python xlrd获取excel cell中的hyperlink不成功

如题，我有一个excel xls文档，里面有一列是hyperlink，我使用xlrd的hyperlink_map.get()来获取hyperlink，但是返回的确实None，代码如下，请大家帮忙看看： import xlrd ... link is None else link.url_or_path 文档截图如下，AK列的hyperlink是我想获取的：...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - PKIX path building failed: SunCertPathBuilderException: unable to find valid certification path to requested

I'm using eclipse and while trying to execute this function I'm getting below error. I want to send a ... 965) at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1064)...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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DolphinDB GUI运行不了

我安装DolphinDB database的GUI后，运行gui.bat一闪而过，啥错误都没有在cmd里执行gui.bat,也是直接一闪，没任何信息： (base) E:dbgui>start java ... autocomplete.jar -Dlook=cross -Xmx2048m com.xxdb.gui.XXDBMain 请问有可能是怎么回事？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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关于nodejs的问题？

后端小白，求一个关于nodejs写restful API 的代码结构目录，类似mvc模式（但是没有view层）...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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怎么把前两个框合并成第三个那也的数组

...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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370 views

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java怎么通过反射实例化另一个已经引入的maven项目里的类？

代码： ` try { seleniumBase sb = (seleniumBase)Class.forName("com.github.wycm.API._douban") .newInstance ... at model.API.base.APIBase.executeSeleniumByReflectUtil(APIBase.java:2395)...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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浏览器F12查看不了vue项目的源码

问题描述一般来说直接配置了sourcemap 直接就可以在webpack下看到源码，但是不知道我这个项目为什么没有源码只在.下面有编译好的代码问题出现的平台版本及自己尝试过哪些方法相关代码粘贴代码文本（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？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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RPA的发展情况好吗，要考虑的话入手哪一款好呢

请问RPA今年来的发展情况如何，未来的发展会怎么样？现在考虑入手RPA产品吗，有哪些靠谱的RPA产商？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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353 views

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Data loss on elasticsearch with Kubernetes - indexes are deleted and created automatically

Setup I'm using elasticsearch:7.9.3 on Kubernetes via Google Kubernetes Engine. The elasticsearch data is persisted ... of elasticsearch, but probably didn't cause the issue....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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245 views

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flutter - "The Google Mobile Ads SDK was initialized incorrectly"

This is not a repeat of this post (they updated the wrong file). Getting the error java.lang.RuntimeException: ... ~6120388314"/> </activity> </application> </manifest>...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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flutter - Part of the window dialog(showDatePicker) that falls on top of the pdf(EasyWebView) does not work, not react

I use two plugins: EasyWebView and showDatePicker. In EasyWebView i show pdf via the link. Under certain conditions, I need ... ) ? No issues found! How this can be solved?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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379 views

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echarts的x轴，文字过长，影响了axisLine，如何控制？

x轴的标签是通过后端获取的，有时候文字过长，就会导致x轴线被往上压，请问要如何才能控制x轴不被往上压呢？ ========================================================== ... ============ 今天看文档发现xAxis.offset似乎也可以解决问题，设置的是x轴线与图的偏移量，没有做具体尝试 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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315 views

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html - How can I make my slideshow repeating without JS?

I'm currently trying to make my image slideshow repeating so that it jumps back to the beginning or repeat with the first image when ... .svg"> </figure> </li> </ul> </div>...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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