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Welcome to Our Knowledge Sharing Community-Open, Learning,Share

Welcome to developer's Knowledge Sharing Community-Open, Learning,Share 欢迎来到程序员专属的知识分享社区! 一个分享知识，传递知识，学习知识的社区！...

asked Feb 5, 2021 in Others[杂七杂八] by ostack (1.4k points)

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1.2k views

1 answer

javascript - image not loading on web page

this is the js code if(slider2){ new Glide(slider2, { type:'carousel', startAt: 0, hoverpause:true, preview: 4, animationDuration: 800, animationTimingFunc: 'cubic-bezier(0.165, 0. ... preview: 3, }, 768:{ preview: 2, }, }, }).mount(); }...

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

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1.0k views

1 answer

java 泛型设计这样有问题吗？

List<String>[] FounderComs = (List<String>[]) new ArrayList<String>[4];...

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

0 votes

1.0k views

1 answer

Are there any advanced options of setting values of properties in jmeter properties file

I got test.properties file for my jmeter test. It contains some enviro property=value pairs and those work nicely. But I would like to add something like this ... any way how to assigned sum of two properties as a value of another property?...

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

0 votes

1.1k views

1 answer

base64转blob，文件格式不合法

当前将裁剪后的base64图片转为blob，然后上传到后端，但接口返回文件格式不合法后端解析的时候，发现这个blob的文件名并不是我当时设置的名字，格式后缀也没有了（大概就是file-d8q3uiaehdfj这样子）。请问有人知道是怎么回事吗？？ file对象也没有问题相关代码...

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

0 votes

1.1k views

1 answer

mongodb副本集两地架构高可用问题

我们现在有一套副本集的mongodb，是在两地的机房，由于资源有限， A地有1个primary和1个secondary， B地有2个secondary和1个arbiter，以前从来没考虑过两地分布似乎不管怎样都不算是高可用，因为必然有一边是少数节点现在B机房计划性搬迁，就面临这个问题，B地直接下电，A地2 ... 一个Arbiter2，然后remove掉B地的arbiter，这样B地下电是不是就完全没影响了另外想请问下两地部署的情况副本集有什么最佳结构吗？感谢 ...

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

0 votes

1.5k views

1 answer

阿里云ODPS(现Maxcompute)中的shell节点,有什么好用法?

ODPS的工作流编辑页面,可以新建shell节点,但是官方几乎没有给太多的Demo,只是说是一个shell节点.在开发的时候,目前见过的场景: 拿shell节点调ODPSCMD跑需要循环逻辑的SQL shell节点里使用管道实现并发跑SQL 调用DataX做数据同步远程某个linux服务器来执行任务..... 嗯,还有哪些让人眼前一亮的使用方案?欢迎分享...

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

0 votes

1.3k views

1 answer

javascript - is there a way to pass undefined.undefined as a function parameter

I want to check if object has a field with value then return default value if it has not.. function testFun(value, defaultvalue) { if (!value) { console.log( ... { console.log(value) } } let testVar testFun(testVar, 'this is default vaue')...

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

0 votes

1.3k views

1 answer

sparql - How to get the directly linked movie through wikiPageWikiLink in DBpedia?

Before 12 days the below sparql query was working properly but when Dbpedia update the interface of the website in 2021 the same query could not retrieve any ... to get the movies that are directly linked to specific movie? Thank you....

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

0 votes

1.3k views

1 answer

centos中安装jdk后找不jdk安装目录？

背景：我使用的操作系统是centos（虚拟机），想安装jenkins,奈何jdk还是1.6版本的所以想升级一下，然后就找了这个教程来升级我卸载了我系统中的JDK1.6，然后我使用yum -y install命令安装了 JDK1.8，安装成功之后使用java -version命令测试了一下，提示是正确的之后我就想去/usr/ ... 理之前应该配置了的啊所以现在的问题就是我想去配置环境变量，但是我找不到jdk1.8的安装目录希望有大佬能帮我解答下这个问题 ...

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

0 votes

1.8k views

1 answer

python - How can I make this code for a multiple choice quiz work in Tkinter?

I plan to show the text in a label and then have 4 buttons at the bottom which the user will select The questions are stored in a notepad file that's quite ... is correct if answer==question[2]: print("Correct") else: print("Incorrect")...

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

0 votes

1.5k views

1 answer

ruby on rails - Sprockets raises "no implicit conversion of nil into String" when using image_path or stylesheet_link_path

Expected behavior It should load resources. Actual behavior image_path(...), stylesheet_link_tag should not raise TypeError: no implicit conversion of nil into String Stacktrace: "/ ... /.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/a...

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

0 votes

1.4k views

1 answer

使用VSC开发nodejs项目如何在处理请求逻辑时调试

比如：在处理路由时打了断点开启debug模式也没有用，控制台也没有对应的打印输入，在chrome浏览器里使用devtools调试也有类似问题，在对应代码位置打断点也是没有用。哪位有经验的大佬能帮下忙。...

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

0 votes

1.9k views

1 answer

presto - date_add for timestamp in Hive

im currently running a query in presto db which has a condition like below: x.created_date > date_add('day',-15,y.arrival_timestamp ) I plan to move the ... sample value 2020-11-24T21:08:20.046000 Any help would be appreciated.Thank you...

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

0 votes

1.9k views

1 answer

CSS 吸底样式

有一个这样的样式，红框标出的是footer，我的想法是当没有滚动条或者没有滚到底时fix在底部滚到底部了按照正常文档流限时不要遮挡到正常内容...

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

0 votes

2.1k views

1 answer

c++ - How to set tab based cookies in WebView2?

How can I set a cookie which would be applicable for just a specific tab in the browser ? Chrome keeps cookies separated for normal mode and incognito mode. What i'm ... is similar to this but i want to do that for every tab in normal mode....