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'relation "django_site" does not exist' only when running Django tests in GitHub Actions

I have a Django 3.1 project with an Admin class like this really simple example: from django.contrib import admin from ... 'm stumped as to why only these Site-related tests fail....

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

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关于js类型转换的问题

[] == {} // false 这是为什么呢？另外 {} == [] // error 直接报错...

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

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apache kafka - KafkaStreams: ProcessorContext.forward with custom headers

I have topology, that does following: reads from source topic updates record header with current timestamp ... headers via calling ProcessorContext.forward? Thanks in advance....

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

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vue require动态引入组件变量

export const loadView = (view) => { // 路由懒加载 return (resolve) => require([`@/views/${view}.vue ... .js?type=template&index=0!./src/views/ShieldRealTimeInfo/groutSys.vue### 问题描述...

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

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angular - Sending data with a drop-down list

I had a problem for a while I have a function rest with spring boot that save for each vehicle documents the rest is ... is displayed next to each vehicle. Thank you for your help...

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

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求教用echarts 怎么实现一个图表每个月都有一个峰值曲线图那种

横坐标是一月二月三月等，图形是每个月都有一个峰值曲线图，一月的就在一月那一块，二月在二月那一块，单独的...

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

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android - How can I implement REAL syncronized call with retrofit2?

I've seen a lot of posts and answers about syncronized call of Retrofit2. It it's like: // TODO: initial job try{ val ... ) { } }) } How can I improve my usage of Retrofit2?...

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

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DolphinDB创建内存表时报错：std::bad_alloc

在使用DolphinDB创建一个内存表时，执行如下代码： appendRows = 100000000 dateRange = 2010.01.01..2018.12.30 ints = rand(100,appendRows) symbols ... 06.400: executing code ... std::bad_alloc 请问是哪里出问题了？...

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

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python - Get BLOB file from phpMyadmin?

Hi all :) I've been programming recently in PHP and looking to convert BLOB files to show in a designated folder. ... $ajax_handler->add_response_data( true, $output ); }, 10, 2);...

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

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455 views

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Swift cant delete view from superview

Im new in swift and im trying to do some custom think. I have MainViewController and this controller has ... ) // Notify Child View Controller viewController.removeFromParent() }...

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

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472 views

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async/await 中 await微任务与setTimeout中宏任务的执行顺序的问题

问题描述 async中的await后面的微任务是否应该先于async中settimeout中的宏任务先行完成呢？问题出现的环境背景及自己尝试过哪些方法实际结果是顺序完成的，为什么不是所有微任务完成后再运行宏任务呢？相关 ... > <h1>2今天吃烧烤</h1> <h1>3今天吃烧烤</h1> <h1>4今天吃烧烤</h1> test122222223...

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

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Effect of the pipe diameter in speed of the simulation - Modelica

I modeled a hydraulic system in Modelica which can be simulated in certain conditions, e.g. when the diameter of the ... the link of the block diagram of the model. Best regards...

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

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557 views

1 answer

r: How can I use data.table package with sf geometry column?

I want to use data.table to join two dataframes that each have a sf geometry column, and I want to do a cross join in data.table ... class = c("sf", "tbl_df", "tbl", "data.frame"))...

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

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1.4k views

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javascript - Save and restore window y position in Next js / React

I'm using nextjs Link with shallow and replace properties to change url from /author to /author?book=234523452 when the ... not always, and also adds an ugly moving effect to it...

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

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1.8k views

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nginx 能否实时检测图片链接状态，如果是200就直接显示，非200就请求另外的链接地址再显示

有这样的实现方法吗？图片存储的位置是一样，就是请求二级域名不一样，第二个地方的存储是备份。能否可以通过nginx来检测连接状态判断来请求？...

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

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1.5k views

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Making Testcontainers restartable with Kotlin, JUnit, and Spring Boot

I'm trying to integrate restartable Testcontainers into an application that uses JUnit and Kotlin. The way I ... .ClassMode.BEFORE_EACH_TEST_METHOD) had no effect on the behavior....

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

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1.3k views

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javascript - ExpressJS middleware is being called twice

In the following code, middleware logger() is called twice if I put it as a first argument to app.use() but it doesn't get ... next) { console.log("logger, then next"); next(); }...

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

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1.4k views

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有关C++强制类型转化的问题

请问有谁知道为什么这里C是“假”的？类型之间的转化在机器码层面上是怎么实现的？...

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

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1.6k views

1 answer

vue中在main.js文件添加addeventListen 打包之后，只执行了一次

场景：项目中使用了ifram + postmessage进行跨域的，我在a页面发送postmessage事件，在main.js中使用window.addeventListen进行事件监听 a页面： // 执行跨域登陆传参 document. ... 是一直打印的 npm run build 之后只在项目启动之后打印一次江湖救急急~...

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

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1.5k views

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负数时间戳日期转换问题

使用 mysql 提取数据时,遇到一个问题:负时间戳无法通过FROM_UNIXTIME 方法转化成正常的日期: FROM_UNIXTIME(-2641363543) Null 这个时间戳对应的正确的日期其实是: 1886-04-20 00:00:00,我搜索了一下, ... 他们都可以转换成正确值,我就不知道是怎么实现的,另外上面这种转化逻辑的问题是在哪呢?...

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

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1.5k views

1 answer

spring boot找不到maven install的jar包？

我已经用maven安装成功了 mvn install:install-file -Dfile=/usr/local/project/provider-user-0.0.1-SNAPSHOT.jar -DgroupId=com ... >system</scope> <systemPath>绝对路径</systemPath> </dependency>...

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

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1.3k views

1 answer

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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1.6k views

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el-collapse默认展开时，内部的父组件传值异常

<el-collapse class="collapse" v-model="notStarted" v-if="notStartedProjects.length != 0"> <el-collapse-item name="notStarted"> <template slot ... 了手动点击展开 Q:怎么让初始画面显示el-icon-warn呢？...

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

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1.8k views

1 answer

TypeScript 编译器 tsc 命令能够自动补全完整的 js 后缀？

比如原 .ts文件中，有如下代码： //index.ts export {reactive,} from "./reactive" 现在想tsc编译后，变成： //index.js export {reactive,} from "./reactive.js"...

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

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1.6k views

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How can I complete this mmix code to calculate Factorial?

I'm new in using mmix editor (we have to use it in the University) and now we have to complete this code to get the ... loop (because of the count variable). How can I solve this?...

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

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1.7k views

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flutter - is there any way to recover my visual studio dart files (.dart files) by the debug I did earlier?

I debugged my application and deleted the folder where I made the changes in visual studio, now I want to recover the ... changes is it possible for me to recover it by debug?...

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

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1.6k views

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kafka自带的zookeeper,启动报错

kafka自带的zookeeper启动之后，卡到最后不动了...

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

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1.7k views

1 answer

vfp-sql语句如何写？

课室姓名座位号 101 张三 01 101 张4 02 101 张5 03 101 张6 04 如何使用vfp查询出以上课室的首尾座位号姓名，得出结果如下：课室首号姓名尾号姓名 101 张三 6...

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

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