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    a= [[4,9],[0,5],[1,6],[2,7],[3,8]]` b= 7 // 需要返回3 如何找到a数组中的b值的位置?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have problem in my task where I suppose to display my record in horizontally with 3 columns Unfortunately, my display is become vertical. The task require us to use modulus (%) ... </tr> <?php $i++; } ?> </table> </center> </div>...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm developing a concept printer that burns images onto wood using a magnifying glass on an xy plotter. One of my anticipated challenges is an inconsistent print quality ... can't find is how to modify Gcode AFTER a print has begun. ideas?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm trying to create two for loops, the first one (k) moving by a window of 10 e.g., (1,10,20,..,90) until 90. and the second one (l) in range (1,100). I ... [values[k][l] for k in range(1,100) for l in range(1, 100)]) thanks in advance....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm trying to load images from a dataset in order to process them in a Neural Network but I have an error while loading them. I don't understand the error and don't know how to fix it. Here are the code and the error...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Does anyone have experience/links to articles discussing using AWS SQS within an API architecture? It looks well suited (considering the needs of the API ... context/gotchas that may be out there when considering an architecture like that....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    So, I've customized my mystyle.css (in vanilla5 skin in pmwiki). I only changed the color from #33F to #abff33. /* * Vanilla5 * A skin for PmWiki 2 (http:/ ... I have no idea why. It also doesnt matter what I change (adding comments etc.)....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am trying to render list of an interface that is dynamically updated by the script in the component. <script lang="ts"> import { defineProps, resolveDirective } from 'vue'; ... "x"> <h3>{{data.Value}}</h3> </li> </label> </template>...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Let's say I have an unweighted directed graph. I was wondering if there was a way to store all the distances between a starting node and all the ... me in the right direction for a good Python implementation of this kind of problem?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    在vue项目中二次封装axios,暴露出一个实例 let instance = axios.create(); instance.defaults.headers['common']['X-Requested-With'] = 'XMLHttpRequest'; // 设置post请求头 instance.defaults.headers.post['Content-Type' ... UTF-8`并不是设置的值 虽然后台确实是需要json数据,但是感觉很怪,请问是怎么回事?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am doing some sql testing using Jest. I have a method that will insert data into the database and return its id. const insert = async () => { const ... an error, but not return a value, but without changing the query. Any suggestions?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I would like to calculate the shortest path between a list of destinations and an origin. But first I need to find the nodes closest to my destinations. I am getting the ... .40466) 3 POINT (15.34169 -4.40443) 4 POINT (15.35278 -4.40812)...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Can someone please explain how to ensure that the derived function is called from a pointer of type base to a derived object instead of the base function... Also, are ... // override? { output << // derived details... return output; } };...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a question it could look silly but its driving me crazy for hours. in asp.net core MVC. the Mouse Cursor when hovering over a href is not chaning ... installed the latest version of boostrap and tried also no luck. any help? thanks....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a simple signal, in one of the app components, that returns an array of items: var itemsSignal: Signal<[Item], Never> Those items might contain ... use ReactiveSwift, but I think this is relevant for other Rx libraries as well....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
    typescript 3.9.5 interface A { [name: string]: string } interface B { b: string } const b: B = { b: 'b' } const a: A = b // 不能将类型“B”分配给类型“A”。类型“B”中缺少索引签名。ts(2322) 如代码所示,ts 检查报错了。将 interface B 改成 type B 就不报错了,两者用法有什么区别?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
    尤大目前开发的这个vite工具说是要告别webpack 启动命令为vue init vite-app 启动后框架结构与vue-cli类似 当这个框架完善后是否意味着将在以webpack为构建工具的vue-cli和vite中选用一个框架开发?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    const arr = [ 'root/lufei.jpg', 'root/font/VarelaRound.ttf', 'root/font/SourceSansPro.ttf', 'root/img/avator.jpg', 'root/img/favicon.jpg', 'root/img/bg5.jpg', 'root/img/bg4.jpg', ' ... ' } ] }, { name:'img', children:[ // 其他... ] } ] } ] }...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
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    如题,我用daocloud每次都是下一半就失败,不知道为什么,阿里云是都直接提示下面这个,我的系统是win10,是我的网络问题吗,请问有什么好的解决方法? Get https://registry-1.docker.io/v2/: net/http: TLS handshake timeout...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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340 views
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    不好意思啊,第一次学Golang,写了个文本去重来练习,文本内容大概75万行,用go test看了下最后的去重时间,需要17's,想知道还有哪里可以优化的 代码如下 package distinct import ( "bufio" "fmt" "io" "os" ... "testing" func TestDistinctFile(t *testing.T) { DistinctFile("result.txt", "out.txt") } 希望师傅们能指点一二...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    mysql数据库主从问题。比如现在时间为7月15日1点,我希望从库的数据是7月14日1点的数据;并且随着时间的推移,从库数据也跟着更新,但是永远都比主库晚24小时,如何实现该需求?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
    项目背景:bootstrap框架,jQuery库,template-web.js 问题背景:整个页面的HTML代码都写在script标签内,然后使用template加入数据再渲染到页面。 模板中的元素使用jQuery语法$("#id").event()绑定的事件和html处理方法会失效,鼠标点击事件和聚焦事件等可以通过委托给父元素的方法处理,那么html处理方法(比如addClass)该怎么办呢...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
    有没有碰到这种问题,vue项目在ie上登录不进去,提示此页上的代码禁用了反向和正向缓存。然后看网络请求,登录接口也被挂起 我把cookie换成localStorage也不行。这是什么原因啊?求大佬解惑...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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334 views
1 answer
    图片转成 base64 后前缀为 data:image/jpg;base64, 这个前缀 image/ 后的图片类型是可以随便定义的吗? 修改成 data:image/;base64, 或 data:image/png;base64, 或 data:;base64, 并不影响图片的显示。...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
    We have a service that generates a lot of configuration(json) files per user. These files need to be persisted and looked up quickly. What's the right technology ... storage solution? It has to be on-premise though so S3 doesn't work....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
    在 Vue 组件中,假设父组件 <Parent1>,某一代的子组件 <ChildN> 正常来说,Parent1 通过 provide 提供了一个方法或变量 a 给了 ChildN,使得它可以直接访问到 /* Parent1 */ provide() { a: this.a } data() { ... "a" not found 请问 Parent2 在不 provide 的情况下,ChildN 如何处理才不会报错呢?或者 ChildN 怎么知道有没有被 provide?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
    I am getting below error on running serverless offline Type Error --------------------------------------------- TypeError: Cannot destructure ... 5) Is there any reason for this error? This was working fine until I have reinstalled my Xcode...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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