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elementUI中<el-cascader使用动态加载时的默认值问题

在element中用<el-cascader标签的lazyLoad（动态加载）遇到一个问题，就是例如我是“编辑”的，所以打开时就要有一个值，但是这组件我发现，编辑时给他赋了值也不显示，这个有人遇到过没？...

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

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dart - Adding a box shadow to a mask before clipping in flutter

I am trying to render the below image as a Widget in flutter. In Figma, this Widget is made using an image ... painter If anyone has any solutions it would be much appreciated....

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

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python - error while installing pgadmin4 in ubuntu 18.04

I'm trying to install pgadmin on ubuntu 18.04, but i'm getting following error. I also tried to rm and reinstall ... configure -a but its not working plz anyone help me with this...

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

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491 views

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winapi - Simulate Win+D (Show Desktop) from Python Script

I want to minimize all open windows and / or show the desktop on a Windows 10 machine from within a ... win32gui but cannot find anything appropriate. Any idea appreciated. Thanks...

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

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423 views

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android - when should use DONT_UNCOMPRESS_PRIV_APPS_DEXS

# Disable uncompressing priv apps so that there is enough space to build the system partition. DONT_UNCOMPRESS_PRIV_APPS_DEXS := true ... enable it as long as I have enough space?...

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

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ant design pro 中wangEditor 怎么在异步方法之后创建并且绑定值

在componentDidMount中用异步方法回显数据 wangeditor不显示请问这里该怎么写？跟表单绑定会显示初始化编辑器时候未传入任何参数，请查阅文档前端新手求助...

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

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vue-element-admin 将多个页面组件化引入同一页面使用

如何实现这个切换交互组件化页面...

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

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CSS Grid如何根据自身容器控制一行展示得元素个数

最近在小程序上使用grid遇到了一个问题：此处的css代码是这么写的： .size_list_cont{ width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); grid-column-gap ... 了minmax(),但是实际效果还是不行，请问大佬们是否有更好的解决方案= =...

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

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apache - Htaccess Redirect directory to another but allow the main folder URL to stay the same

We are currently using the below .htaccess code to redirect /artist/* to /artists/* which works well however, we need the URL ... RewriteRule ^artist/(.*)$ /artists/$1 [R=301,NC,L]...

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

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vuex数据没有更新，watch却监听到了的原因会是什么？

vue中使用vuex将数据保存在store中，computed 属性取数据，store.commit 方法提交数据，watch监听数据变化时执行方法。问题是没有提交数据的情况下，watch能监听到数据变化，原因是什么呢？...

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

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mac 2020 终端默认zsh,但配置文件内容太少

默认 zsh 配置文件太少还不支持 git 补全设置主题啥的都没有那么，原来的配置文件在哪里呢？...

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

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kubernetes - how to make already exposed service not to be exposed?

I deployed a (LoadBalancer) service for a pod on my minikube cluster, then exposed it via minikube service ... not deleting (and redeploying) the existing already exposed service?...

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

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create c++ binary with make for iOS

I am trying to create a binary using a makefile with iOS as target platform. However, I have only seen the option to ... getting an iOS target work with that make file. Any ideas?...

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

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308 views

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Want to get previous session value before destroying session and after getting user object while login in Laravel

I am working with an e-commerce site in laravel. When a guest user adds product to carts I am storing the ... data into database. Please suggest me how to accomplish this task....

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

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824 views

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tp6 设置统一响应头

假如说有一些请求有相同的响应头要设置，能不能在其他地方统一设置一下？？？...

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

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376 views

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为什么以下用php实现的链表尾插法，修改$temp变量会影响到$linkList？

代码如下： <?php class Node { public $data; public $next; } //创建一个链表 $linkList = new Node(); $linkList->next = null; $temp = $linkList; for ($i = ... 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 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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app中怎么识别其他app是否已经安装呢？

过年时微视做营销活动，有些任务是打开其他app，点击任务列表中的按钮打开软件，返回微视，就可以领取奖励，如果软件没有安装，“打开”按钮就变成“安装”按钮，这个怎么实现的呢？我有两个疑问：微视怎么判断其他软件是否已经安装的？从微视打开其他软件，微视怎么判断是否打开成功，从而给用户奖励，会不会出现用户并没有打开其他软件而骗取微视奖励的情况呢?...

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

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425 views

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想问一下除了AILabel 还有什么免费的数据标注库吗？

想实现图片标注之类的前端，以及语音标注分割之类的。可以多介绍点吗？...

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

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c++ - Serial port connection in VirtualBox between Windows and Ubuntu

I have installed Ubuntu on VirtualBox as guest and the host is Windows10, I'm working on serial programming and ... Are my configurations correct for serial port in the VirtualBox?...

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

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python - Why does this output the first element in the tuple?

I was reading through some answers and this was a solution to printing ['Bill', 'John', 'Tony', 'Phill'] from the list below. ... does this line do? print([x for x, y in mylist])...

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

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557 views

1 answer

composer install提示错误：preg_split(): Compilation failed: this

把laravel源码上传到服务器后，执行composer install命令后，出现了下面的错误提示。试了百度的问题都尝试了，也不行。重新安装pcre库，编码为utf-8也解决不了。不知道是什么导致出了这个问题。...

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

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227 views

1 answer

C++里为什么空指针也能调用函数成员？

#include <iostream> using namespace std; class A{ public: void f(){ cout<<this<<endl; } }; int main() { A *a = nullptr; a->f(); return 0; ... 0 为什么 a->f() 这种空指针调用成员函数是允许的？它的机制是什么？...

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

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412 views

1 answer

sentry接入钉钉消息无法收到报错信息

sentry V9.1.2 接入了gitHub 这个https://github.com/anshengme/... Test 可以收到，项目报错一直出现错误求助万分感谢...

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

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261 views

1 answer

java - How to implement a popup dictionary on selecting word?

How can i implement a popup dictionary on selecting word like ontouch dictionary in my android pdf viewer app? Note: I am using android studio for developing my app....

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

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209 views

1 answer

swift语法问题 ["1","2","3"] 如何转成 1,2,3 ?

同类问题： ["1","2","3"] 如何转成 "1","2","3"...

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

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313 views

1 answer

nodejs服务端模板可以用基于vue的ui框架吗？

我是前端，目前在学习nodej，发现教程上提到后端模板只说使用ejs等模板引擎解析后端数据，前后端不分离的话后端模板能否像前端那样以工程的形式使用基于vue的ui框架，比如iview，elemeui 比如一个有三个选项的tab页签，在前 ... 页面（也就是三个组件），在后端模板中是不是就要使用script标签引入，页面与页面之间不像前端那是一个spa页面...

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

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关于golang的const

package main import "fmt" const ( i = 7 j k ) func main() { fmt.Println(i,j,k) } 这段代码的输出为什么是 777 呢？？？...

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

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1 answer

请问确认订单页面小计数量怎么获取？

如图，我想获取单个模块里面的小计前面共几件，我的写法只有第一块是正确的，第二块的小计会连第一块的一起加上去，这样不对，我要怎样让每一块小计都单独显示 <div class="weui- ... jiage*num; allNum += numJisuan; $(".all-price").text(allNum.toFixed(2)); //合计 });...

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

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