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319 views

1 answer

amazon web services - How to set environment variables according to stage in cloud formation template

The environment variables in the lambda handler has to be set via lambda handler according to the stage. The values for schema, endpoint ... ...... ...... How to continue further?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

407 views

1 answer

关于网络字节序的一些疑问

以下是我用wireshark抓取的Raw 802.11（Radiotap头部加上802.11帧），关于大端小端字节序以前没有接触过，搞糊涂了想请教大神几个问题，谢谢 Radiotap头部，第三第四个字节是代表着头部的长度，对应着图中的0d ... ，前四位当成子类型？也就是说该字段位数也反过来了？为什么会这样呢，什么字段位数会反呢？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

393 views

1 answer

python - Deleting messages that start with certain prefix [discord.py]

I want my bot to delete all messages that are not starting with the prefix .. I wrote this code so far in discord. ... ('.'): return else: await message.delete() Thanks in advance...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

298 views

1 answer

JS 的一个设计上的bug(疑似)

今天测试一段代码的时候发现： var str1 = 'hello world' console.log(str1 instanceof String) // 输出false console.log(str1.__proto__ === String. ... property of a constructor. 我想问的是，为什么这两个结果不同呢？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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336 views

1 answer

hexo页面永久链接配置

我想要达成这样的效果，如果页面中没有配置permalink属性，则使用主配置文件里的链接格式，如果配置了该属性，则用该属性作为永久链接 hexo主配置文件_config.yml中有permalink这个配置项，默认值为:year ... 是2017/03/05/diary/hello.html.html 不知道该怎么配置才能达到这样的效果，请教各位大神谢谢...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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633 views

1 answer

像58同城的微站通那种通过拖拽就能像搭积木一样建网站的程序是什么原理？

现在很多平台都推出过可以简单的点点鼠标就能随意组合模块，生成网页了比如这个：还有有赞里面的也可以自定义设置页面，还有淘宝的店铺装修好像也有这样的功能，传统的页面都是模板都是死的，怎么做到让普通用户这么傻瓜的设计页面呢，没做过这类的东 ... 拽来搭建页面的网站，原理是不是跟这个有点类似，希望了解的大神给点指示，里面需要用到什么技术，有哪些要注意的，谢谢了 ...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

178 views

1 answer

c# - Why i can't see runtime error in Exception Page?

In asp.net core I create manually unhandled exception but i can't display runtime error in Visual Studio or Exception ... app.UseExceptionHandler("/Home/Error"); app.UseHsts(); }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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408 views

1 answer

summernote插件如何增加更多的字体

1.我想增加更多的字体（font-family）,如微软雅黑，我该怎么做？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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435 views

1 answer

一个shell脚本问题请教

v3_addServer.sh内容 cat v3_addServer.sh #!/bin/bash uplist=ipList main_2() { while read noteline do if [ -z "`echo $noteline | grep -v ^$`" ]; ... 行，而且打印出，也只打印了 1 3 5 7 9行的，这是为什么的？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

292 views

1 answer

render为什么不用传参

class App extends React.Component { constructor(props){ // 必须要传递参数 super(props) this.state = { text: this.props.text } } render( ... 要constructor内部要读取props就要写明这个参数，但是render不用，为什么呢？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

477 views

1 answer

Setting up PostGIS on Gitlab CI fails: psql could not connect to server: No such file or directory

I'm trying to create a PostGIS extension in the testing job of GitLab CI, as some of the tests require that extension ... "$POSTGRES_DB" -c "CREATE EXTENSION "postgis";" line. Why?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

227 views

1 answer

python 3.x - pandas: groupby with multiple conditions

Would you, please help me, to group pandas dataframe by multiple conditions. Here is how I do it in SQL: with a as ( select high ,sum( ... '0','1','0','0','0'] Thank you very much!...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

189 views

1 answer

How to pass the multiple sensor values to the notification bar in android when the app is in the background

I am a newbie in android sensors and notifications. I am working with sensor data(light, proximity, accelerometer, and ... .setText(String.valueOf(event.values[2])); } }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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616 views

1 answer

这个爬虫不停报错，我一共写了两个爬虫，大家帮忙看一下

from bs4 import BeautifulSoup import requests import os from multiprocessing import Pool from urllib.request import urlretrieve total_num ... '__main__': #pool = Pool() download()...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

1 answer

redis 如何处理队列阻塞的呢

阻塞队列都是出队阻塞，入队没有阻塞这么一说那么出队如何处理阻塞呢...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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591 views

1 answer

laydate 日期插件选择后显示正常，但是获取不到input的val值。

有解决方法吗...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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536 views

1 answer

jq如何判断含有某个子元素节点

假如我一个div;里面有三个节点；现在我要用jq来判断节点样式名为class的节点是否存在怎么判断...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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764 views

1 answer

reactjs - Recoil State is not updating properly

I have the following code. const [verificationValues, setValues] = useRecoilState(verificationFormValues); setValues( ... nidOrPassport, addressProof, recentPhoto, etc. are objects...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

1 answer

nginx反向代理解决跨域的疑问

localhost:80下的页面通过ajax，去调取localhost:8082/api/v1.0/testapi的数据，如下nginx配置问题在哪儿？谢谢 server { listen 80; server_name ... 0/testapi', success: function(data){ console.log(data) } });...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

366 views

1 answer

fis3 tmpl文件如何设置资源定位

tmpl文件（underscore模版）中使用图片，如何保证打包后添加cdn地址和图片md5 fis-config.js fis.match( '*.tmpl', { rExt: '.js', parser: fis.plugin( ' ... ？ ps: 通过设置 isHtmlLike:true 后，tmpl文件被编译为了字符串，之前是一个函数...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

331 views

1 answer

vuex获取不到getters

...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

416 views

1 answer

Ajax 请求数据成功页面的数据没加载出来

Ajax请求数据后是成功返回数据的，但是在ajax success块里 alert（）都弹不出来、页面的数据也没更新出来，但是手动按F5后就有了...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

500 views

1 answer

web端百度网盘的一个操作为什么要分两次请求服务器, 有什么好处吗

以文件重命名为例: 当完成重命名操作提交会到这个地址 https://pan.baidu.com/api/filemanager 返回如下结果 { "errno": 0, "info": [], "request_id": 88137407060055336, " ... 新UI元素问题: 直接访问重命名接口不行吗? 为什么要这么设计, 好处是什么?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

497 views

1 answer

win7运行docker命令报错connection reset by peer

请大神老司机带路；在自己的win7小本上装卸三四次，之前好好的，这次装完运行 docker login、 docker pull、 docker run...报错，且都有connection reset by peer字样但是。。。在根目录下就可以...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

302 views

1 answer

使用UglifyJsPlugin压缩react后为什么出错

在webpack中使用了uglifyjs对打包后的js文件进行压缩，但是为什么压缩之后，react却无法使用了这个是入口文件压缩之后，执行这个文件，出这种问题，react也无法使用而如果在webpack中 ... webpack.ProvidePlugin压缩就会出问题，反正就是到require('react-dom')这里出问题这个该怎么解决？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

483 views

1 answer

php56-redis 安装出错

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

228 views

1 answer

reactjs - IonInput losing autofocus

I'm trying to implement an input with the autofocus attribute, it is working when I'm using it alone, but when I add an ... with <input type="button"> and I would like to use it....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

432 views

1 answer

pandas - python: better way to handle case sensitivities with df.replace

I have the following code to replace text in my dataframe - dfMSR. oldtxts = ['NA', 'na'] newtxt = 'N/A' for oldtxt in oldtxts: if oldtxt ... 1 N/A E 2 O N/A 3 Z 4 N/A N/A Thanks...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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