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<div class="post-text" itemprop="text"> <p>In the back end i m using go lang and for database i use mongoDB. I m trying to find the last document inserted in the embedded array so i can retrieve the document in the last array index without knowing its index.Right now i m getting all the documents of the employee and then find the last index.It is like overloading my RAM as i need to retrieve 1000 of record of employee and store it in ram before finding the last index of the array My struct is as follows</p> <pre><code> type ( Employee struct { Name string Password string EmpId string EmailAddress string Position string Gender string Nationality string Department string MaritalStatus string Approvedby string JoinDate time.Time ConfirmationDate time.Time EndDate time.Time Leave []*LeaveInfo } LeaveInfo struct { Total float64 Id int Days float64 From time.Time To time.Time Status string Certificate []*CertificateInfo } CertificateInfo struct { FileName string FileType string FileSize int } </code></pre> <p>Here is how i do in my application </p> <pre><code> My code is follows employee := Employee{} err = c.Find(bson.M{ "empid": "1234" }).One(&amp;result) if err != nil { log.Fatal(err) } name:=result.Name lastindex:= result.LeaveInfo[len(result.LeaveInfo)-1].Id </code></pre> <p>As you can see i retrive the whole employee data and then find the Id of the last document.Is there any better way to do this.Appreciate any help.Please ...Thanks..</p> <blockquote> <p>Newly Added Codes</p> </blockquote> <pre><code> This code is based on your example var result bson.M query := bson.M{"empid": "1234"} // gets the employee you are interested in match := bson.M{"$match": query} // Set up the match part of the pipeline unwind := bson.M{"$unwind": "$leave"} // sets up the leave field to be unwound pipeline := []bson.M{match, unwind,{ "$project":bson.M{ "ID":bson.M{ "$slice": []interface{}{"$", -1}, } } iter := postCollection.Pipe(pipeline).Iter() for iter.Next(&amp;result) { fmt.Printf("%+v ", result) } iter.Close() </code></pre> <p>This code gives me lot of same document like 542 documents .But all these document are same...</p> </div>


<div class="post-text" itemprop="text"> <p>As <code>$</code> positional operator doesn't work 2 level deep nested array, I am using alternative schema to enable update function for nested array.</p> <p>I have a nested documents as follows</p> <pre><code>{ '_id' : 1234, 'bio' : { 'achievements' : { 'Yhg87Hghg65' : { 'title' : 'Achievement 1', 'score' : 95, 'year' : 2004 }, '67gjfygt8Hd' : { 'title' : 'Achievement 2', 'score' : 89, 'year' : 2003 }, 'Lkoh8hHggf7' : { 'title' : 'Achievement 1', 'score' : 90, 'year' : 2005 } } } } </code></pre> <p>Now, using mongodb aggregation pipeline, I can fetch this as follow in PHP</p> <pre><code>$doc = $collection -&gt; aggregate( array( '$match' =&gt; array( '_id' =&gt; 1234 ) ), array( '$project' =&gt; array( 'bio.achievements' =&gt; 1 ) ) ); </code></pre> <p>Until now, everything works fine. But I need to sort achievements by year. Using normal <code>'$sort'</code> before <code>'$project'</code> wont work because because achievements aren't arrays, they are fields whose values are array. If anyone know how to achieve it, please give me some hints.</p> </div>


{ "_id" : ObjectId("549127427d3201f5086a711d"), "_class" : "cn.togym.entity.SitePrice", "siteId" : NumberLong(1122), "date" : "2014.3.10", "siteSlice" : [{ "sliceId" : 0, "sliceName" : "场馆一", "sliceIntroduction" : "阿斯达克减肥哈离开时记得发货了空间", "siteSliceDetail" : [{ "SiteSliceDetailId" : 0, "startTime" : "08:00", "endTime" : "09:00", "price" : 100.0, "occupy" : 0 }, { "SiteSliceDetailId" : 1, "startTime" : "09:00", "endTime" : "10:00", "price" : 100.0, "occupy" : 0 }, { "SiteSliceDetailId" : 2, "startTime" : "10:00", "endTime" : "11:00", "price" : 100.0, "occupy" : 0 }] }, { "sliceId" : 1, "sliceName" : "场馆一", "sliceIntroduction" : "阿斯达克减肥哈离开时记得发货了空间", "siteSliceDetail" : [{ "SiteSliceDetailId" : 0, "startTime" : "08:00", "endTime" : "09:00", "price" : 100.0, "occupy" : 0 }, { "SiteSliceDetailId" : 1, "startTime" : "09:00", "endTime" : "10:00", "price" : 100.0, "occupy" : 0 }, { "SiteSliceDetailId" : 2, "startTime" : "10:00", "endTime" : "11:00", "price" : 100.0, "occupy" : 0 }] }, }], "dateType" : "新年" } 怎么修改sliceId=1并且startTime=08:00内的occupy的值。不知道他在数组内的下标


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<div class="post-text" itemprop="text"> <p>Hi I am looking for solution. I am not sure if this question is already here in stackoverflow. I was trying to find its solution on google but couldn't find any solution. I need to fetch records from mongo database such that it should be ordered by the array of ids I specify only. For example following is the set of data from the required table.</p> <pre><code>{ "_id" : NumberLong("5832686213760"), "created_by" : "3694181860160", "title" : "adsf", "date" : "2015-10-12 21:57:27", "cat" : "251", "description" : "dsafadsf", "members" : [ "3694181860160" ], "battles" : [ ], "is_deleted" : NumberLong(0) } { "_id" : NumberLong("5836854817600"), "created_by" : "3692778550272", "title" : "dd", "date" : "2015-10-13 02:13:32", "cat" : "939", "description" : "dddd", "members" : [ "3692778550272", "3690476217152" ], "battles" : [ "1475499726016" ], "is_deleted" : NumberLong(0) } { "_id" : NumberLong("5830033945536"), "created_by" : "3692705624256", "title" : "My own group", "date" : "2015-10-11 11:50:27", "cat" : "731", "description" : "yes this is my own group. hahahhahah", "members" : [ "3692705624256" ], "battles" : [ "1478264481792", "1472313521152", "1478428020992" ], "is_deleted" : NumberLong(0) } </code></pre> <p>If I need to fetch the above data in the order as following array specify.</p> <pre><code>array("5830033945536","5832686213760", "5836854817600") </code></pre> <p>Please note that this is only a part of data and ids, the real query will be dynamic. I am working in Yii 1.x. So I need the solution in json as well as in php.</p> </div>


<div class="post-text" itemprop="text"> <p>Is that possible to sort data in sub array in mongo database? </p> <pre><code>{ "_id" : ObjectId("4e3f8c7de7c7914b87d2e0eb"), "list" : [ { "id" : ObjectId("4e3f8d0be62883f70c00031c"), "datetime" : 1312787723, "comments" : { "id" : ObjectId("4e3f8d0be62883f70c00031d") "datetime": 1312787723, }, { "id" : ObjectId("4e3f8d0be62883f70c00031d") "datetime": 1312787724, }, { "id" : ObjectId("4e3f8d0be62883f70c00031d") "datetime": 1312787725, }, } ], "user_id" : "3" } </code></pre> <p>For example I want to sort comments by field "datetime". Thanks. Or only variant is to select all data and sort it in PHP code, but my query works with limit from mongo...</p> </div>


<div class="post-text" itemprop="text"> <p>I am using the mgo.v2 driver with the latest version of MongoDB installed. My document structure is defined like this: </p> <pre><code>type gameTemplate struct { ID bson.ObjectId `bson:"_id" json:"id"` GameCode string `bson:"gamecode" json:"gamecode"` Players []player `bson:"players" json:"players"` } type player struct { PlayerID bson.ObjectId `bson:"playerid" json:"playerid"` Username string `bson:"username" json:"username"` Level int `bson:"level" json:"level"` } </code></pre> <p>How would I go about getting a list of usernames in a particular game (Defined by <code>gamecode</code>)? </p> <p>Is there a way to get the size of the array and iterate through the elements, or is there a preferred method? </p> </div>

mongodb 如何进行 模糊分组查询

我现在有一个集合,比如{phonePlatform:'Android 4.0',carrier:"中国移动"},{phonePlatform:'Android 5.0',carrier:"中国移动"},{phonePlatform:'Android 6.0',carrier:"中国联通"},{phonePlatform:'iOS 6',carrier:"中国移动"},{phonePlatform:'iOS 7',carrier:"中国电信"} 我想统计一下 使用android ,iOS系统的分别有多少人,怎么写查询语句呢,如何进行分组呢,aggregate $group可以办到不? 请大神指点!在下感激涕零

mgo / mongodb:聚合-查找所有成员并按membercount排序,但是membercount是成员userid的数组

<div class="post-text" itemprop="text"> <p>The representation of 1 record (a community):</p> <pre><code>{ "_id" : ObjectId("538a4734d6194c0e98000001"), "name" : "Darko", "description" : "Darko", "subdomain" : "darko", "domain" : "", "created" : ISODate("2014-05-31T21:18:44.764Z"), "category" : "Art and Culture", "owner" : "53887456d6194c0f5b000001", "members" : [ "53887456d6194c0f5b000001" ] } </code></pre> <p>and the Go type</p> <pre><code>Community struct { Id bson.ObjectId `bson:"_id,omitempty" json:"id"` Name string `json:"name"` Description string `bson:",omitempty" json:"description"` Subdomain string `bson:",omitempty" json:"subdomain"` Domain string `json:"domain"` Created time.Time `json:"created"` Category string `json:"category"` Owner string `json:"owner"` Banned []string `bson:",omitempty" json:"banned"` Members []string `json:"members"` Moderators []string `bson:",omitempty" json:"moderators"` Admins []string `bson:",omitempty" json:"admins"` Logo string `bson:",omitempty" json:"logo"` Stylesheets []string `bson:",omitempty" json:"stylesheets"` Javascripts []string `bson:",omitempty" json:"javascripts"` } </code></pre> <p>Ok now I'd like to retrieve a list of all communities of <code>Category</code> <code>Art and Culture</code> and order by the number of members aka <code>members.length</code> in js or <code>len(Community.Members)</code> in Go.</p> <p>something like <code>SELECT * FROM communities ORDER BY COUNT(members) WHERE category = 'Art and Culture'</code></p> <p>I have a custom type to be filled or unmarshalled into</p> <pre><code>CommunityDirectory struct { Id bson.ObjectId `bson:"_id,omitempty" json:"id"` Name string `json:"name"` Description string `bson:",omitempty" json:"description"` Subdomain string `bson:",omitempty" json:"subdomain"` Domain string `json:"domain"` Created time.Time `json:"created"` Category string `json:"category"` Logo string `bson:",omitempty" json:"logo"` Membercount int64 `bson:"membercount" json:"membercount"` } </code></pre> <hr> <p>What I have so far</p> <pre><code>func (ctx *CommunityContext) Directory() { pipe := ccommunity.Pipe([]bson.M{bson.M{"membercount": bson.M{"$size": "members"}}}) iter := pipe.Iter() result := CommunityDirectory{} results := []CommunityDirectory{} for { if iter.Next(&amp;result) { results = append(results, result) fmt.Println(result) } else { break } } ctx.JSON(results) } </code></pre> <p>but this doesn't work because</p> <pre><code>db.communities.aggregate( [ {"membercount": {$size:"members"}} ] ) Error("Printing Stack Trace")@:0 ()@src/mongo/shell/utils.js:37 ([object Array])@src/mongo/shell/collection.js:866 @(shell):3 uncaught exception: aggregate failed: { "errmsg" : "exception: Unrecognized pipeline stage name: 'membercount'", "code" : 16436, "ok" : 0 } </code></pre> <p>So, it should find all, order by membercount and assign a new "virtual" field membercount but only of category 'Art and Culture'.</p> <p>I find MongoDB quite complicated in this regard.</p> <ol> <li><p>What does the mongodb query look like?</p></li> <li><p>What does that look like in Go/mgo?</p></li> </ol> </div>


<div class="post-text" itemprop="text"> <p>I'm trying to use the size of an array called "empofthemonth" to sort each field returned by their amount of employee of the month wins.</p> <p>Here is the insert code:</p> <pre><code>$db-&gt;users-&gt;insert( ["firstname" =&gt; "firstname1", "lastname" =&gt; "test", "email" =&gt; "", "keyinfo" =&gt; ["age" =&gt; 22, "gender" =&gt; "Male", "yearsemployed" =&gt; 1, "empofthemonth" =&gt; ["Apr"]] ]); $db-&gt;users-&gt;insert( ["firstname" =&gt; "firstname2", "lastname" =&gt; "test2", "email" =&gt; "", "keyinfo" =&gt; ["age" =&gt; 24, "gender" =&gt; "Female", "yearsemployed" =&gt; 5, "empofthemonth" =&gt; ["Feb", "Mar"]] ]); $db-&gt;users-&gt;insert( ["firstname" =&gt; "firstname3", "lastname" =&gt; "test2", "email" =&gt; "", "keyinfo" =&gt; ["age" =&gt; 31, "gender" =&gt; "Female", "yearsemployed" =&gt; 2, "empofthemonth" =&gt; ["Jan", "May", "Jun"]] ]); </code></pre> <p>I realise that <a href="" rel="nofollow">aggregation</a> might be used but i cannot work out the full syntax.</p> <p>To conclude the query results should be in this order:</p> <ol> <li>firstname3 (3 emp of the months)</li> <li>firstname2 (2)</li> <li>firstname1 (1)</li> </ol> </div>




新手求教。 本人的几种思路: 1.传统的序号,当要插队时,后面所有人的序号+1。 2.链表。 3.数组,但是传统的的SQL数据库能存数组么?没见过。目前想的是mongodb存json数组


<div class="post-text" itemprop="text"> <p>I'm trying to export data from leads table to excel using PHP/Laravel, the leads table caמ be customized to show specific columns and the export columns should be same as the table columns. the problem is - if column not exists in a specific row the column not shown empty and the 'xls' file is exported really messy... my code looks like this:</p> <pre><code>public function excelExport(Request $request, $client_id=null) { $client_id = is_null($client_id) ? \Auth::client()-&gt;id : $client_id; if(is_null($this-&gt;client_users)){ $this-&gt;client_users = $this-&gt;clientsController-&gt;listClientUsers($client_id); } $columns = $this-&gt;account_settings-&gt;getColumnsDef($client_id); $query = Lead::select(array_keys($columns))-&gt;where('client_id',strval($client_id))-&gt;where('deleted',0); $query = $this-&gt;setQueryDates($request,$query,$client_id); $query = $this-&gt;leadsFiltersController-&gt;setExportQuery($request,$query); $arr = $query-&gt;get()-&gt;toArray(); Excel::create('leads' , function($excel) use ($arr,$columns){ $excel-&gt;sheet('Leads' , function($sheet) use ($arr,$columns){ $rows = []; $count = 0; foreach($arr as $lead){ $row = $this-&gt;setExportRowData($lead,$count,$columns); $rows[] = $row; $count++; } $sheet-&gt;fromArray($rows); }); })-&gt;export('xls'); private function setExportRowData($lead,$count,$columns,$order = true) { $row = []; $order = null; foreach($lead as $k =&gt; $v) { if (is_array($v)) { switch (strtolower($k)) { case "ga_details": if (count($v) &gt; 2) { foreach ($v as $key =&gt; $ga_detail) { if ($key != "realTime_data" &amp;&amp; $key != "uacid") { $row[$key] = $ga_detail; } } } break; case "status": if (isset($v['name']) &amp;&amp; count($v['name'])) { $row['status'] = $v['name']; } else { $row['status'] = "no status"; } break; case "owner": if (isset($v['owner_id']) &amp;&amp; count($v)) { $row['owner'] = $this-&gt;getClientOwnerUserName($this-&gt;client_users, $v['owner_id']); } else { $row['owner'] = "no owner"; } break; case "prediction": if (isset($v['score']) &amp;&amp; count($v)) { $row['prediction'] = $v['score']; } else { $row['prediction'] = "no prediction"; } break; case "the_lead": foreach ($v as $key =&gt; $lead_detail) { $row[$key] = $lead_detail; } break; case "quality": if (isset($v['name'])) { $row['quality'] = $v['name']; } else { $row['quality'] = "no quality"; } break; case "feeds": if (isset($v['feeds']) &amp;&amp; count($v['feeds'])) { $row['feeds'] = array_pop($v['feeds'])['message']; } break; default : $row[$k] = $v; break; } } else { if ($k != "_id") { $row[$k] = $v; } } } return $order == true ? sortArrayByArrayValues($this-&gt;order,$row) : $row; } </code></pre> <p>sortArrayByArrayValues function looks like this:</p> <pre><code>function sortArrayByArrayValues(Array $array, Array $orderArray) { $rtn = []; foreach($array as $arr){ if(isset($orderArray[$arr])){ $rtn[$arr] = $orderArray[$arr]; }else{ $rtn[$arr] = ''; } } return $rtn; } </code></pre> <p>I really have no clue how to solve it, appreciate any help!!! :)</p> </div>


<div class="post-text" itemprop="text"> <p>Ok, first of all, I'm not even sure the title is right, if so, I'm sorry.</p> <p>I have this loop here which is the result of a MongoDB query:</p> <pre><code>foreach($cursor as $obj) { $monster = $obj["type"]; $strenght = $obj["strenght"]; $obj["value"] = rand(5, 15); } </code></pre> <p>now, I have put <code>rand</code> there to signify that <code>value</code> changes for each iteration. Now i want that this array, when is printed, is ordered by that <code>$obj["value"]</code>, and be able to chose if ascending or descending.</p> <hr> <p>ok, I have tried this</p> <pre><code>foreach($cursor as $obj) { $type = $obj["monster"]; $strenght = $obj["strenght"]; $obj["value"] = rand(5, 15); $newarr[] = $obj; } usort($newarr, "cmp"); function cmp($a, $b) { return $b['value'] &lt; $a['value']; } foreach ($newarr as $obj) { echo $obj['value'] . $obj['type'] . "&lt;br/&gt;"; } </code></pre> <p>As I expected, the </p> <pre><code> $obj["value"] = rand(5, 15); </code></pre> <p>does not get lost at every iteration in fact, the $newarr contains that value, the problem is that it does not sort them at all. The items are printed in the same order as they were put inside the array. Any help?</p> <p>Thanks</p> </div>


感觉全世界营销文都在推Python,但是找不到工作的话,又有哪个机构会站出来给我推荐工作? 笔者冷静分析多方数据,想跟大家说:关于超越老牌霸主Java,过去几年间Python一直都被寄予厚望。但是事实是虽然上升趋势,但是国内环境下,一时间是无法马上就超越Java的,也可以换句话说:超越Java只是时间问题罢。 太嚣张了会Python的人!找工作拿高薪这么简单? https://edu....


大学四年,看课本是不可能一直看课本的了,对于学习,特别是自学,善于搜索网上的一些资源来辅助,还是非常有必要的,下面我就把这几年私藏的各种资源,网站贡献出来给你们。主要有:电子书搜索、实用工具、在线视频学习网站、非视频学习网站、软件下载、面试/求职必备网站。 注意:文中提到的所有资源,文末我都给你整理好了,你们只管拿去,如果觉得不错,转发、分享就是最大的支持了。 一、电子书搜索 对于大部分程序员...


今年,我也32了 ,为了不给大家误导,咨询了猎头、圈内好友,以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助,记得帮我点赞哦。 目录: 你以为的人生 一次又一次的伤害 猎头界的真相 如何应对互联网行业的「中年危机」 一、你以为的人生 刚入行时,拿着傲人的工资,想着好好干,以为我们的人生是这样的: 等真到了那一天,你会发现,你的人生很可能是这样的: ...


分享外包的组织架构,盈利模式,亲身经历,以及根据一些外包朋友的反馈,写了这篇文章 ,希望对正在找工作的老铁有所帮助


何来 我,一个双非本科弟弟,有幸在 19 届的秋招中得到前东家华为(以下简称 hw)的赏识,当时秋招签订就业协议,说是入了某 java bg,之后一系列组织架构调整原因等等让人无法理解的神操作,最终毕业前夕,被通知调往其他 bg 做嵌入式开发(纯 C 语言)。 由于已至于校招末尾,之前拿到的其他 offer 又无法再收回,一时感到无力回天,只得默默接受。 毕业后,直接入职开始了嵌入式苦旅,由于从未...


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今天下午在朋友圈看到很多人都在发github的羊毛,一时没明白是怎么回事。 后来上百度搜索了一下,原来真有这回事,毕竟资源主义的羊毛不少啊,1000刀刷爆了朋友圈!不知道你们的朋友圈有没有看到类似的消息。 这到底是啥情况? 微软开发者平台GitHub 的一个区块链项目 Handshake ,搞了一个招募新会员的活动,面向GitHub 上前 25万名开发者派送 4,246.99 HNS币,大约价...


前言: 如何悄悄的打开朋友的摄像头,看看她最近过的怎么样,嘿嘿!这次让我带你们来实现这个功能。 注: 这个程序仅限在朋友之间开玩笑,别去搞什么违法的事情哦。 代码 发送邮件 使用python内置的email模块即可完成。导入相应的代码封装为一个send函数,顺便导入需要导入的包 注: 下面的代码有三处要修改的地方,两处写的qq邮箱地址,还有一处写的qq邮箱授权码,不知道qq邮箱授权码的可以去百度一...


一、菱形继承 在介绍虚继承之前介绍一下菱形继承 概念:A作为基类,B和C都继承与A。最后一个类D又继承于B和C,这样形式的继承称为菱形继承 菱形继承的缺点: 数据冗余:在D中会保存两份A的内容 访问不明确(二义性):因为D不知道是以B为中介去访问A还是以C为中介去访问A,因此在访问某些成员的时候会发生二义性 缺点的解决: 数据冗余:通过下面“虚继承”技术来解决(见下) 访问...


一、前言 注意,关于ipv4和ipv6,ipv4是ip协议第4版本,也表示这个版本的ip一共4个字节,同样地,ipv6是ip协议第6版本,也表示这个版本的ip一共6个字节。 关于网络层使用路由器实现互联:在计算机网络的分层结构中,不同层有不同的中继设备: 计算机网络层 中继设备/中继系统 物理层 中继器、集线器Hub 数据链路层 网桥或交换机(交换机是多端口网桥,两者本质上是一个东西) 网络层 路...



技术大佬:我去,你写的 switch 语句也太老土了吧

昨天早上通过远程的方式 review 了两名新来同事的代码,大部分代码都写得很漂亮,严谨的同时注释也很到位,这令我非常满意。但当我看到他们当中有一个人写的 switch 语句时,还是忍不住破口大骂:“我擦,小王,你丫写的 switch 语句也太老土了吧!” 来看看小王写的代码吧,看完不要骂我装逼啊。 private static String createPlayer(PlayerTypes p...


华为面试整体流程大致分为笔试,性格测试,面试,综合面试,回学校等结果。笔试来说,华为的难度较中等,选择题难度和网易腾讯差不多。最后的代码题,相比下来就简单很多,一共3道题目,前2题很容易就AC,题目已经记不太清楚,不过难度确实不大。最后一题最后提交的代码过了75%的样例,一直没有发现剩下的25%可能存在什么坑。 笔试部分太久远,我就不怎么回忆了。直接将面试。 面试 如果说腾讯的面试是挥金如土...

和黑客斗争的 6 天!

互联网公司工作,很难避免不和黑客们打交道,我呆过的两家互联网公司,几乎每月每天每分钟都有黑客在公司网站上扫描。有的是寻找 Sql 注入的缺口,有的是寻找线上服务器可能存在的漏洞,大部分都...



总结了 150 余个神奇网站,你不来瞅瞅吗?



提到“程序员”,多数人脑海里首先想到的大约是:为人木讷、薪水超高、工作枯燥…… 然而,当离开工作岗位,撕去层层标签,脱下“程序员”这身外套,有的人生动又有趣,马上展现出了完全不同的A/B面人生! 不论是简单的爱好,还是正经的副业,他们都干得同样出色。偶尔,还能和程序员的特质结合,产生奇妙的“化学反应”。 @Charlotte:平日素颜示人,周末美妆博主 大家都以为程序媛也个个不修边幅,但我们也许...




女朋友说:“看你最近挺辛苦的,我送你一个礼物吧。你看看想要什么,我来准备。” 我想了半天,从书到鞋子到电子产品最后到生活用品,感觉自己什么都不缺,然后和她说:“你省省钱吧,我什么都不需要。” 她坚持要送:“不行,你一定要说一个礼物,我想送你东西了。” 于是,我认真了起来,拿起手机,上淘宝逛了几分钟,但还是没能想出来缺点什么,最后实在没办法了:“这样吧,如果你实在想送东西,那你就写一个代理服务器吧”...






即将毕业的应届毕业生一枚,现在只拿到了两家offer,但最近听到一些消息,其中一个offer,我这个组据说客户很少,很有可能整组被裁掉。 想问大家: 如果我刚入职这个组就被裁了怎么办呢? 大家都是什么时候知道自己要被裁了的? 面试软技能指导: BQ/Project/Resume 试听内容: 除了刷题,还有哪些技能是拿到offer不可或缺的要素 如何提升面试软实力:简历, 行为面试,沟通能...

离职半年了,老东家又发 offer,回不回?

有小伙伴问松哥这个问题,他在上海某公司,在离职了几个月后,前公司的领导联系到他,希望他能够返聘回去,他很纠结要不要回去? 俗话说好马不吃回头草,但是这个小伙伴既然感到纠结了,我觉得至少说明了两个问题:1.曾经的公司还不错;2.现在的日子也不是很如意。否则应该就不会纠结了。 老实说,松哥之前也有过类似的经历,今天就来和小伙伴们聊聊回头草到底吃不吃。 首先一个基本观点,就是离职了也没必要和老东家弄的苦...


阿里巴巴全球数学竞赛( Alibaba Global Mathematics Competition)由马云发起,由中国科学技术协会、阿里巴巴基金会、阿里巴巴达摩院共同举办。大赛不设报名门槛,全世界爱好数学的人都可参与,不论是否出身数学专业、是否投身数学研究。 2020年阿里巴巴达摩院邀请北京大学、剑桥大学、浙江大学等高校的顶尖数学教师组建了出题组。中科院院士、美国艺术与科学院院士、北京国际数学...








当HR压你价,说你只值7K时,你可以流畅地回答,记住,是流畅,不能犹豫。 礼貌地说:“7K是吗?了解了。嗯~其实我对贵司的面试官印象很好。只不过,现在我的手头上已经有一份11K的offer。来面试,主要也是自己对贵司挺有兴趣的,所以过来看看……”(未完) 这段话主要是陪HR互诈的同时,从公司兴趣,公司职员印象上,都给予对方正面的肯定,既能提升HR的好感度,又能让谈判气氛融洽,为后面的发挥留足空间。...


HashMap底层实现原理,红黑树,B+树,B树的结构原理 Spring的AOP和IOC是什么?它们常见的使用场景有哪些?Spring事务,事务的属性,传播行为,数据库隔离级别 Spring和SpringMVC,MyBatis以及SpringBoot的注解分别有哪些?SpringMVC的工作原理,SpringBoot框架的优点,MyBatis框架的优点 SpringCould组件有哪些,他们...






爬取彼岸桌面网站较为简单,用到了requests、lxml、Beautiful Soup4

面试了一个 31 岁程序员,让我有所触动,30岁以上的程序员该何去何从?





已经连续五年参加大厂校招、社招的技术面试工作,简历看的不下于万份 这篇文章会用实例告诉你,什么是差的程序员简历! 疫情快要结束了,各个公司也都开始春招了,作为即将红遍大江南北的新晋UP主,那当然要为小伙伴们做点事(手动狗头)。 就在公众号里公开征简历,义务帮大家看,并一一点评。《启舰:春招在即,义务帮大家看看简历吧》 一石激起千层浪,三天收到两百多封简历。 花光了两个星期的所有空闲时...