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1.2k views

1 answer

做了主从数据库放在阿里云，然后主库阿里云莫名其妙服务器挂了，当时过了没多久就重启了，现在发现主从从当时就挂了，然后就查binlog，想定位到同步终端的地方，结果从库能看到创建时间49分24秒的数据记录，binlog里却 ... 50分01秒开始，49分应该是我重启主库mysql的时间（不确定是几秒时重启的），难道是mysql启动时binlog记录会遗漏一些？...

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

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1.3k views

1 answer

Combinations adding up to a target - Julia lang

I am new to Julia, I've asked this question in a simpler form, I need to expand it a bit more. I need to find a ... res_x = round.(Int,value.(x)) @assert numbers'*res_x == target...

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

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1.5k views

1 answer

mysql - Union two tables with categories in a query that retrieves categories and its parents

I have a PHP function that returns me an array with category information. It is supposed to be provided with a ... these tables first somehow, but I don't understand how....

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

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2.4k views

1 answer

swift - alamofire post login response and navigation

I used Alamofire to make a login page on my app, I managed to log in using the below request @IBAction ... to another viewcontoller if success and show error message in failure?...

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

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1.5k views

1 answer

后端如何管理文件？

要做一个用户上传文件的库需求是一个“文件对象”对应一个文件（file），文件名，上传时间，上传用户以及内部的文件路径和名字数量可能会很大该如何管理这些文件？...

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

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1.9k views

1 answer

vue-cli4打包后如何让文件输出到同一个文件夹内？

之前一直用vue-cli3，打包后的文件夹非常清爽，如下： index.html static(文件夹) favicon.ico vue-cli4 打包后，dist文件夹下会有非常多的文件——这些文件vue-cli3都放置于static文件夹内，怎么配置可以让 vue-cli4 达到这种效果呢？...

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

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2.6k views

1 answer

java - How can I create independent TestNG Maven executable

I need to create a .jar file using maven and testng. My jar needs to read a testng.xml file and execute all the tests ... > </execution> </executions> </plugin> </plugins> </build>...

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

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3.2k views

1 answer

javascript - vue-slick-carousel touch move not working

I have a laravel vue.js project, in my project I use vue slick carousl this is my component code <categories- ... is in progress and cannot be interrupted. please help, Thanks....

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

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3.1k views

1 answer

flutter怎么让setState变成同步的

void test() async{ setState(() { _showWidget = LineSpinFadeLoaderIndicator(ballColor: Colors.blue); }); for(int i =0;i<1000000;i+ ... 比setState先出结果了，因为setState是异步的，怎么让setState变成同步的...

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

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3.2k views

1 answer

input[type='range']中,设置max:1.5和min:1，如何适配进度高亮，如下图和代码

问题在max:100,min:1时，进度高亮是正常的，现在想要max:1.5和min:1时,也适配进度高亮 max:100,min:1 max:1.5和min:1 代码 <template> <div> <div> ... 4px 0px rgba(0, 0, 0, 0.2); border: 2px solid #70B8FF; } </style>...

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

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3.6k views

1 answer

windows - An error has occured opening the folder on the FTP server. Make sure you have permission to access the folder

I cannot access the folder in my FTP server remotely. FTP unable to work I can login using cmd enter image description here...

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

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3.5k views

1 answer

关于swiper中使用elementUI中el-tooltip失效的问题？

<div v-swiper:mySwiper="swiperOption"> <div class="swiper-wrapper"> <div class="swiper-slide" :key="banner" v-for="banner ... }, mounted() { this.mySwiper.slideTo(0, 1000, false) }...

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

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3.5k views

1 answer

linux - for loop without List in the shell script

I am reading a shell script( /opt/openfoam8/bin/foamCleanPath) from OpenFoam. In this script, there is a code segment: for dir do .... done I ... -------------------------------...

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

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3.3k views

1 answer

java - How do you make a conditional statement return true when only one condition is true?

I need to make an if statement in which its value depends on N other conditions. Particularly, it needs to return ... this (that is, without even implementing a whole method)?...

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

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3.7k views

1 answer

ts怎样实现，防止类中的属性被直接赋值修改？

`export class Animal { privateAttribute setPrivateAttribute(value) { this.privateAttribute = value } } new Animal().setPrivateAttribute('good way') // ... 赋值,就能修改对象内的数据，请问有啥好的想法吗？...