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关于MySQL用户权限的问题

MySql创建用户或角色后，该用户默认也是可以创建用户或角色的吗？如果没有创建用户的权限，那么应该如何给该用户或角色授予创建用户和角色的权限呢？...

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

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HTML上传文件和图片到go-fastdfs文件服务器，前端怎么获取相对路径呢？

public void setImgeUrl(MultipartFile file) { //文件地址 File file = new File("D:git2.jpg"); //声明参数集合 HashMap paramMap = new HashMap<>() ... file = new File("D:git2.jpg");这里又需要获取对应的路径 }...

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

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js 如何判断是否是ios设备？

这段代码有什么问题一直提示括号不匹配？ var isiOS = !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/);...

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

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vue里面遍历不了描述列表吗？就是列表头也是遍历的，数据也是遍历出来的那种。

现在出来的是这种效果目标是这种效果，下面的table数据我准备单拉出来，然后现在的话该怎么做呢？这么写做不到列表头和列表信息都是遍历的吗？ html:最外面是弹出层 <! ... .log(row.dev_id); this.detailTitle = row.dev_name; // 接口数据 this.showDetails = true; },...

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

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integration testing - Flutter integration_test - Making screenshot

Hey are there any possibilities to make a screenshot when using integration_test lib (https://pub.dev/packages/integration_test) for ... method to take it. Here i coldn't find any....

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

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vue中v-html为毛不解析img标签嘞

vue的v-html解析不了后台传过来的富文本数据，带标签的那种...

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

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正则匹配 @#%2@#% 为false 其他情况遇到2 都为 true

目前这样写，始终无法满足要求...

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

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vant框架的下拉加载方法，还未滚动到尾部就自动触发，这是为什么？

页面并未滚动，一载入就自动触发了滚动到底部才会触发的加载方法（我设置的是一次性加载5条）代码大概是这样...

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

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函数内部的变量被全局变量使用，此函数是否会销毁？

闭包是函数内部嵌套一个函数，内部函数被全局变量使用，所以无法释放但如果函数内部有一个引用类型（不是函数），作为返回值给全局变量使用，此函数会销毁吗？ function f1() { var a={}; return a; } var b=f1( ... ) 另外，根据闭包的定义，函数嵌套的子函数会形成闭包那么如上例子即使作用域无法释放，应该也不叫闭包吧？...

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

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Generic type requires 1 type argument(s) 如何解决报错？

interface someArray<T> { (array: T[]): T[] } interface someObject { sArrar: someArray, } 报错 Error:(176, 13) TS2314: Generic type ... 只是声明了两个接口，为啥会 requires 1 type argument(s). 谢谢 ...

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

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vue中:style样式绑定为什么不起作用？

请问下为什么变成80px没有折叠起来呢？...

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

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Xcode Swift - WKWebView implementation

I am currently trying to implement a simple WKWebView in a Navigation Page in Xcode using Swift, however, as soon ... /nFFlH.jpg Help would be greatly appreciated! Sincerely, Lukas...

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

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两个分支代码相差一年，git如何合并成最新代码？

分支B是去年从分支A拉出来的，到现在已经有一年了，这一年期间A和B分支各自都有开发改动，现在想把B merge回A，请问有什么快捷的方法吗？...

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

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js对象数组中删除出现次数为偶数次的项,保留奇数次的项

在对象数组中删除出现次数为偶数次的项,保留奇数次的项 var a = [ { id: 1, content: '11' }, { id: 2, content: '22' }, { id: 1, content: '11' }, { id: ... content: '44' }] // 在数组中保留出现次数为奇数次的项删除偶数次的项有无大佬帮忙看看...

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

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python 3.x - Pandas groupby => AttributeError: 'function' object has no attribute 'mean'

I try to compute the average size of a population composed of men and women: >>> import pandas as pd >>> ... size.mean() AttributeError: 'function' object has no attribute 'mean'...

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

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javascript - What is the correct way to import Vuetify components individually?

I'm new to Vuetify and it's really hard to me to know how to import only component for using it. I am using Vuetify 2. ... > </v-tabs-items> </v-card> Thank you for your support...

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

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caching - Docker Build using Buildkit any way to log which file burst the cache?

In gradle, tests are run as part of the build, so I use a test report target from "scratch" to copy the test results ... Is there any way to log which file(s) burst the cache?...

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

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python书写规范的问题

如果一个对象的方法返回的是另一个对象，而你需要再使用这个对象的方法： # 1 objx.x_method().y_method() # 2 objy = objx.x_method() objy.y_method() 像1这样写符合规范吗？如何评价这两种写法？...

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

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php - SMTP in Laravel 7 godaddy hosting

So i have created an App in Laravel 7 and Deployed it in Godaddy Shared hosting, everything works except for the Mailing. ... Message. but Mail not being sent. What is the Fix ?...

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

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sorting - C# - Sort items of linked list by date

I am having a Node public class Node { public Node(Pupil pupil) { Data = pupil; Next = null; } ... basically teach it ourselves in university. Help would be really appreciated....

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

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eloquent - Laravel - use multiple value in where DB query

in my posts table have extra_category column with saved mutiple value(json) same ["12","15","23"] now I want use ... on the model protected $casts = ['extra_category' => 'array',]...

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

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vue.js - How to make disabled button after click in Vuejs

I have a button on my website that gives bonuses to the user. Button have several conditions in 1 button: <button ... and if all success, so that the Take button becomes disabled?...

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

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Is there a way to style an email tag that becomes a premade HTML <a> link?

I'm working on creating an email notification within helpdesk software, Sysaid. The software uses HTML markup for ... decoration (in my limited understanding) breaks the element....

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

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现在大中小公司的生产环境一般都在用 Java 哪个版本？

只是想了解一下，有大概知道的吗？...

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

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3.8k views

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parsing - Database of chemicals with associated properties?

I think pubchem has what I need here, I want a database that is -or could be converted into- a table of chemical ... the data being too much to read through is not an issue....

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

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flutter做的APP，google play提交APP，提示：上传原生调试符号文件。

请问，这个原生调试符号文件。是什么？在flutter怎样生成呢。新手不懂。用VS CODE。怎样设置或生成呢？...

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

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请教一个js数据格式装换问题

有没有比较好的方法吧图一的数据装换成图二的样子，规则是同名的key和value合并，组装成父子级的关系，而且leve可能有很多层可以嵌套很多层，请问下有比较好的方法吗?...

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

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怎么判断addeventlistener('message')和取到的localstorage

项目需求是进入页面addeventlistener('message')，接收到数据拿着数据调用接口，如果没有并且本地有数据，则用本地的，但是现在问题就是肯定优先使用message传入数据，没有采用本地的（例如刷新）...

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

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