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python - Django Error - MultiValueDictKeyError at /new_bid/5 'total_bid.' (Beginner help appreciated)

I'm creating a page on a site to allow users to 'bid' on items similar to ebay. When I try to enter a number ( ... render(request, "auctions/listing.html", { "id": listingid, })...

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

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How to connect to a Google Cloud SQL database using Java

I am in the process of making my database cloud based, however I'm having trouble connecting to it. I have followed this https ... , or a new way about it I would be very grateful....

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

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用 gradle 打包自己写的 kotlin 工具包，打成的 jar 其他项目无法 import 里面的方法怎么办?

项目是用 IDEA 的 gradle 项直接创建的，项目路径如下： src/ ├── main │?? ├── java │?? ├── kotlin │?? │?? └── org │?? │?? └── lxx │?? ... libraries项查看，发现自己的jar包右侧会标记 library root ，请问如何解决呢，非常感谢大家...

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

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c++11 - Have `std::ostreambuf_iterator` write to a string instead of `std::cout` in this example

I am going through an example of std::regex_replace. The example uses this std::regex_replace(std::ostreambuf_iterator<char>(std:: ... how do I make it write to a string instead ?...

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

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react页面引入模块报错 Cannot use import statement outside a module

项目里npm install了一个bpmnjs,然后再页面import的时候报错了代码如下： require我也试过，报一样的错，上面三行import就没事，正常运行，求教下这是啥问题，研究了半天进行不下去了（react项目）...

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

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Does anybody know the status of www.mingw.org?

At least from 2021-01-10T15:19:40Z, I cannot access www.mingw.org. As far as I know, that is the official mingw ... www.mingw.org? Or, any other suite place to ask this question?...

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

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为何在Vue3+Vite下，<template>可以有多个根元素？

我尝试了一下 Vue3 + Vite，新建项目之后自带的 Demo 中有以下内容： <template> <img alt="Vue logo" src="./assets/logo.png" /> <HelloWorld msg="Hello Vue 3 ... 为什么 <template> 可以有多个根元素，这是个新特性么？（本人之前只用过 Vue2）...

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

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babel如何对依赖包处理的

以下是babel设置为什么引用的react依赖包会报错呢对于第三方依赖的库还要单独设置babel处理么...

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

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vue中让默认插槽slot里只能显示指定的组件呢? 比如el-select的默认插槽只能放el-option,

vue的默认插槽里可以放任何代码, 但是怎么限制具体的内容呢? 过滤this.$slots.default我觉得是不可行的, 没看懂Element的源码, 至少它不是这样做的 <el-select v- ... .value" :label="item.label" :value="item.value"> </el-option> </el-select>...

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

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Android APP的数据库（位于data/data/(包名)/files）会不会被系统清理软件删除掉？

我开发安卓数据库的时候不想存储的数据被系统清理软件当作“缓存”、“垃圾软件”而清理掉。清理软件针对的是否只是cache目录，而对data目录下的数据库没有删除权限（需要root才行）？...

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

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While point in polygon plot points/lines fails (Circle.contains_point; Python; matplotlib; pyplot)

My task: Plot an initial point and calculate new point positions (x, y) while points are in a circle. My ... 4.162733919918537 5.063203536206856 -4.162733919918537 Fig 2 (for loop)...

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

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omnet++ - How to display queue size

I am trying to display the current queue status (i.e. the number of packets in the queue) of a node in OmNet++ ... all time. Can anyone suggest me how to display it? Thank you....

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

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vue-router如何实现类似于小程序路由跳转的reLaunch方法？

小程序reLaunch的方法关闭所有页面，打开到应用内的某个页面补充一下具体描述：就是类似于 relaunch 方法，在网页中的表现可以理解为清除掉之前的记录然后没办法回退到前一页或者前几页举例来说： A -> ... 就是还会有可能回到上一页的操作，所以我需要自己手动来选择是$router.go(-1)还是用类似于relaunch的这个方法 ...

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

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text - Extract bullets from Word Document in R

I have a Microsoft Word document that contains several bullets and nested bullets (sub-bullets), with up to three ... the wheel that others might have already developed. Thanks....

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

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js some() 是同步方法吗?

some遍历数组的时候,符合某个条件跳出循环,并返回值如果不符合在递归调用 recursionModel(parentModel, selectMesh) { let flag = false console.log(1) parentModel. ... flag) return flag 但是结果返回的是false 不知道什么原因导致的,求解??...

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

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php中，给类的属性/方法赋值一个匿名函数之后，如何调用执行？

php代码如下： class bird{ public function __construct($str){ echo "bird __con <br>".$str; } } $eagle=new bird('fly'); //给类的属 ... 问题二：$chicken->onMessage里面执行外部定义的方法out_f($buffer)会不会报错？...

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

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React Native 要如何进行性能调试

需求：最近app有个tab有点卡，想看具体的分析数据。技术 expo react-native 请问大佬们，有rn相关的性能分析工具推荐吗，类似谷歌的调试可以看到性能报表...

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

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TypeScript import .vue 文件 ‘Cannot find module’ 求助！！

明明已经有这个文件了为何还是无法识别的.vue 文件呢! CAPTURE_2020612_154719.jpg Cannot find module...

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

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python - How can I replace os.system output with replace method?

def folderFinder(): import os os.chdir("C:\") command = "dir *.docx /s | findstr Directory" os.system(command).replace(" ... I want. How can fix this problem(i am new at python)...

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

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html - Set length of characters in input text

How do I set this input box to not be this long? My code: <div class="form-group"> <label for="exampleInputPassword"> ... echo $_SESSION['pswrd']; ?>"> </div> The display: Image...

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

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382 views

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python - ValueError on executing my docker container

the way for employment, I've been studying docker. I built container from dockerfile, and got ValueError when I run a ... development environment: docker : 20.10.2 python : 3.9...

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

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小程序中图片加载问题

初次进入页面图片路径渲染出来了，但是显示404，第二次进入页面图片才显示出来，请问要怎么解决。使用了wx:if="{{show}}"来判断，并且给了图片加载的时间。...

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

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python - Multiplying the current value of a variable

Write a statement that assigns cell_count with cell_count multiplied by 10. * performs multiplication. If the input is 10, ... and its not the correct answer, can someone help me....

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

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362 views

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axios怎么同时取消多个请求

在axios的文档里有这么一句话可以使用同一个 cancel token 取消多个请求，但是文档没有给出同时取消多个请求的例子，请问这个地方如何使用？ https://www.kancloud.cn/yunye......

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

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234 views

1 answer

ADAM Device Connection Issue

I am tempting to connect to an ADAM device. However, I cannot connect to the device. The connection is being refused. ... working. Does the Adam device have a built in security?...

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

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187 views

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java - Can't git clone larger repository

A few of you might know Spigot (it's Minecraft server software). I'm trying to run their BuildTools.jar to update the current build ... on the repo) I'm at my wit's end. Any ideas?...

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

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我的wordpress网站被挂了后门，请问如何找出后门？

我的网站是wordpress搭建的，index.php文件隔几天就会被修改，早上用WebShellKiller查杀了一遍，把改删的文件都删了，晚上还是被改了代码，请问我该如何找出被埋后门的文件？？如果谁能远程指导一下我的话，愿意发个红包以表感谢！...

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

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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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