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JS怎么判断数组有多少个重复的

比如 ['aa','aa','bb','cc','aa','dd','dd']; 'aa' 有 3个重复的。怎么判断一个数组里面到底有几个重复的？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How can I add a href to an entire figure

I have the following html snippet: <figure> <img src='image.png' height="250" width="250"> <figcaption>Album name goes ... or the caption under it they get directed to a new page....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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solidity - Parse Ethereum private key in string in Go

I am trying really hard to convert Ethereum private keys BIP44 in string format to a type that can (*ecdsa.PrivateKey) be ... = nil { fmt.Println("Cannot parse private key") } }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Slice a list in haskell with specific indexes

I have this list: [[0,4,1,4],[1,12,1,4],[2,8,1,4],[3,54,2,4],[4,1,2,2]] I also have another list: [2,3] -- Represents the indexes ... : [[0,1,4],[1,1,4],[2,1,4],[3,2,4],[4,2,2]]...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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string - How to detect name of another variable but not his value javascript?

In the js code I have var a1 = "text in a1"; var right_text = a1; a1 is the variable where this text is written ... right_text (a1 in this case) and convert it as string? Thank you...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ide - Why I can' see new version google apps script editor?

I'm in Japan. By now I still just can see the legacy version. Anyone know why? I googled but got no answer. ... is no button for switch between legacy version and the new version....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue.js - Vue3 / vite External Component

Seems like i'm stuck with my problems with loading a external umd component in vue. I try to do something similar as ... :asyncComponent }, .... Can somebody help me with this?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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为什么七牛上传图片会报错

var uploader = Qiniu.uploader({ runtimes: 'html5,flash,html4', browse_button: 'pickfiles', container: 'container', drop_element ... setError(); progress.setStatus(errTip);= } } });...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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用h5本地存储是否安全？

后台系统，用h5本地存储将用户token存储下，每次请求带上token，这样安全吗？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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字符串里的u'u00a1'怎么打印成中文

现在有一个字符串，值就是： demo = """ [u'u2019u2018 u5fc5u987bu4e3au5408u6cd5u7684u65e5u671fu683cu5f0fuff0cu8bf7u4f7fu7528 YYYY-MM-DD u683cu5f0fu3002'] """ 现在我想把字 ... -DD 格式 ] ''' 这两个值之间怎么转换下呢？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

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angularjs material - Md-Menu dropdown menu automatically closing when executing a function in background

I have the following menu in my HTML view: <md-menu> <md-button class="md-icon-button" ng-click="$mdOpenMenu($event)"> ... dropdown open only if I click on one of the menu items....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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297 views

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vuex获取不到getters

...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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526 views

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PHP根据用户权限显示不同栏目的大概思路和数据库字段如何设计呢

PHP根据用户权限显示不同栏目的大概思路和数据库字段如何设计呢...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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WebStorm 双击单词，匹配到所有的一样的，但是修改单词，匹配到的都修改了？

WebStorm 双击单词，匹配到所有的一样的，但是修改单词，匹配到的都修改了。能不能和其他编辑器一样，双击单词，相同的单词高亮，但是修改这个击中的单词的时候，只是这个修改，而不是查找替换的功能...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - How to set even width for button view which supports in all mobile devices

I have created Button View programatically inside LinearLayout with VERTICAL orientation. Below is my code for button view ... ) like width for all devices. Thanks in advance....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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728 views

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do while - Checking Loop in C - scan() is not running by the second run

void openMenu(int *op) {//edited do { printf("Your turn... "); scanf(" %d", op); if (*op > 14 || *op < 1 ) ... too... Did u have maybe a nice idea? Working with Xcode on Mac 11.1...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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DruidWebStatFilter 出错

使用阿里巴巴的WebStatFilter用于采集web-jdbc关联监控的数据，但是在运行项目的时候报错这是我的配置文件 <filter> <filter-name>DruidWebStatFilter</filter-name> ... -pattern>/*</url-pattern> </filter-mapping> 请问大神们这是哪里出错了？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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509 views

1 answer

触发mailto链接，打开邮箱客户端，收件栏等信息不回自动填充。

触发mailto链接，打开邮箱客户端，收件栏等信息不回自动填充，仍未空白。代码如下： <a href="mailto:[email protected]?subject=ccc&body=xxx yyy">聯繫郵箱<span class="c">[email protected]</span></a>...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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395 views

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TCP的三次握手和HTTP的返回状态有关系吗？

HTTP底层TCP，是TCP/IP关于数据如何在万维网通信的协议，在学习HTTP返回状态的时候看到下面的总结： 1xx：请求收到，继续处理 2xx：操作成功收到，分析接受 3xx：完成此请求必须进一步处理 4xx：请求包含一个错误语法或不能 ... 状态都是在三次握手之后，PS本人没有系统学习过TCP/IP协议，只是接触过这几个概念，所以底层并不是很了解 ...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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为什我用V-model的值放到vux管理，就不是动态的了

input的v-model,放到vuex怎么做可以随着input的值修改而改变...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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503 views

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python - How to catch sqlite3.IntegrityError with pytest.raises?

I am trying to catch a sqlite3.IntegrityError error with pytest.raises(). Here's some toy code to illustrate the ... NOT RAISE <class 'sqlite3.IntegrityError'> err.py:28: Failed...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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nginx - angular 7 npm build crashing (Rebalance Allocation failed - process out of memory) from ec2 server

Showing error: Cannot get stack trace in GC. FATAL ERROR: NewSpace::Rebalance Allocation failed - process out of memory 1: node ... Need help on this to fix. We have Ec2 nginx pm2...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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458 views

1 answer

求助，服务器被用户上传的图片塞满了，怎么办？

图片上传就是php的直接$_FILES获取的文件，保存到硬盘，但是现在图片把服务器塞满了，我该怎么办，有第三方的可以用吗？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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987 views

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serialization - Mapstruct convert object field to type as string + value.toString()

In Java, we have this beautiful library Mapstruct. I'm wondering whether it can map field to field type name + field ... } return convertTo; } } Is it possible with the mupstruct?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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238 views

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最新版vue-router的bug

query: {checkboxGroupValue: [11, 22]}, 当$router.push()后,url变成如下, bu query: {checkboxGroupValue: [22]}时候如下这时候我 ... 时候地址是 checkboxGroupValue[]=11&checkboxGroupValue[]=22, 现在怎么才能变成那样...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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596 views

1 answer

reactjs - How to fix Unrecognised Font Family in expo-font?

I have been staring at my code for ages trying to work out what is wrong and haven't been successful. Essentially, I am trying to ... "@babel/core": "~7.9.0" }, "private": true }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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532 views

1 answer

visual studio - Missing multiple MSBuild .target files on build server

We use an on-premises build server (32-bit Windows 7; note: updating the machine is not an option) with Azure. ... ideas at this point. Any suggestions/insights are welcomed. TIA....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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312 views

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wireshark windows版本2.0 如何配置TLS 解密

想通过wireshark 去抓包学习一下 http2，然而 wireshark 不能解密https的包，查了一下资料，使用 Wireshark 调试 HTTP/2 流量, HTTP/2 流量调试两篇文章，配置了环境变量，但是都没有看到解密之后的内容。困惑的地方如何在wireshark 配置TLS 解密?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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