Recent questions in Technique[技术]

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Apache Spark Word2Vec throws org.apache.spark.shuffle.FetchFailedException: requirement failed

I run spark word2vec on a 2G of data with the following config using pyspark 3.0.0. spark = SparkSession .builder .appName(" ... is the cause here and how can I fix it. Thank you....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - Filter text/tweet column with keywords

I downloaded a timeline and have now a dataframe with 3200 observations of 1 variable (tweets). I want to filter my ... tweet matching my keyword but I know that there are more....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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azure timeseries insights - Is there a way to link to TSI visualization to a python application

I am new to Time series Insights. I am curious about the python sdk to connect to TSI. I am aware that we can ... to every tag which would take the user to the respective trend....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Socket.io Node.js and React - function multiple execution

I'm trying to send message using Socket.io. When I open chat and send messages it works correctly. The problem is when I ... log(msg); socket.broadcast.emit('incMsg', msg) }) })...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Is it possible in Flutter to jump to Settings > Accessibility > VoiceOver > Speech > Add New Language on iOs?

Like the title says, Is it possible in Flutter to jump to Settings > Accessibility > VoiceOver > Speech > Add New ... but not to add Language or add voice. Thanks in Advance...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Get parent route path from children (react-router-V6)

V6 related question ! I have nested routing and in child component I have tab component... I need to get path of ... const match = useMatch(resolver.pathname); Using this hook......

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Locking an SQL Table and waiting for lock to be released - Java

I want to execute a oracle stored procedure which creates table level lock , checks whether a record(with specific criteria) ... with its step 2. There could be 5-7 instances....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - How to pass in props to Link Router?

Hello I want to pass in props to another component through Link Router I am using Class Component constructor(props: IBanner) ... error is this and what can i do to mitigate this/...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Swift: How to properly reuse a UICollectionViewCell's CALayerMask property in a UICollectionView

I set my cell's, cell.customView.layer.mask property in the following function: func collectionView(_ collectionView: ... and understanding, I am new to stack overflow :)...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android studio - Call method in java without object or class name

Button myButton = (Button) findViewById(R.id. my_button) As much I know in java all code have to be on a class ... ) findViewById(R.id. my_button) Can anyone explain how it works?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - White space under (absolute positioned) div

How do I put a fixed empty space under an absolute positioned div? I have a div that automatically fits the size of ... . When I use padding-bottom - not working which I understand...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Autoencoder using MLP for anomaly detection in multivariate timeseries

I am developing an autoencoder using an MLP to detect anomalies in a multivariate time series. To simplify the problem, ... series. How would the input shape and output layer look?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Day Calculation is wrong

I'm making a clock, that calculates the number of days based on the date that the user input. Let's say the user input ... 60000 / 1000); } setInterval(countTime, 1000); }, false);...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - How to move an object in Ellipse path in SwiftUI?

Ellipse Path i am trying to move an object in ellipse path. but i don't know correct way and i think it need some of ... 2pi*t/T); When A == B, the trajectory is a circumference...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jvm是用什么语言写的

jvm是用什么语言写的...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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326 views

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帮忙解决几个js的问题

1. 两个a,b两个js文件，a里面写的是闭包的方法，b文件里怎么去调用，或者说这两个文件怎么进行数据通信（就是es5中的使用） 2. var a = 1; delete a;//false alert(a)//1 // ----- ... 和后两个的结果不一样？这怎么理解？ 3. 想问问模块化中的require与import的区别，他们的运行机制是怎样的？...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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888 views

1 answer

angular - How to reset to default value bsDateRangePicker

I'm trying to create reactive forms with Angular 9. And also I use ngx-bootstrap I'm trying to use daterangepicker, ... it to default value. Is that possible? Thanks in Advance...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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548 views

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kotlin - Quarkus: REST resource can't find entities created in test

I'm trying to create a test for a REST resource I've created with Quarkus, Panache & Kotlin. The test first writes a ... entities:. Does anyone have any idea what I'm doing wrong?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to write stateful dbus methods in haskell?

I'm working with dbus in haskell, and I'm having difficulties figuring out how to export dbus methods that perform stateful ... t know how to handle the types with respect to DBus....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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有哪些预测算法可以根据实时增量数据更新算法并预测后续数据？

数据库里有一串时序数据，每1分钟还会有新的数据进来。想用历史数据，并通过增量数据的不断更新，实现对未来几个1分钟的预测。有哪些可行的算法？...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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426 views

1 answer

xshell链接linux怎么链接几秒就断开了啊，什么原因，以前也不这样啊

网上查了一下说什么是IP变了，但是我看了ip没有改动啊，还有就是连不上网，也不知道哪里的原因...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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490 views

1 answer

session状态不传递，每个点击行为都会产生新session（会话）怎么破？

大家好我在用Google Analytics分析网站用户数据的时候，发现如下问题：（1）一个用户的一次完整浏览路径会被切割成多个部分，也就是一个会话（session）统计不完整，会按照用户的浏览顺序切割成A B C D ... ，这样session不传递的问题是不是session代码的问题？另外，如何查找页面中已经定义的session代码？谢谢大家 ...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

1 answer

[cordova]安卓手机已经开启开发者选项，为何在WebStorm中点Run后无法输出到手机中运行，提示权限被拒？

BUILD SUCCESSFUL Total time: 18.944 secs Built the following apk(s): E:/Projects/example9/platforms/android ... /data/local/tmp/android-debug.apk Failure [INSTALL_CANCELED_BY_USER]...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer

centos：setlocale: LC_ALL: cannot change locale (zh_CN.UTF-8)

centos系统不知道如何解决这个问题。网上的方法都差不多都尝试了。 centos：setlocale: LC_ALL: cannot change locale (zh_CN.UTF-8) No such file or directory 无法改变语言环境，觉得需要一个中文语言包！安装好中文语言包依然有问题：...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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275 views

1 answer

怎么样才能让chrome的<li>列表符号居中

如图所示，<li>的内容文字居中了，但是<li>的列表符号过不来，在firefox下是正常的，chrome怎么这么奇葩，chrome版本是56，怎么才能显示正常，怎么样hack css才能解决...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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516 views

1 answer

pandas dataframe如何对某列的空数据位置进行update？update的函数是自定义的，参数是同一行的另外两列数据

dataframe的某列fillna如何通过自定义函数的返回值进行填充？自定义函数需要以某几列数据作为参数类似下面代码的功能怎么实现？df['resultOfab'].fillna（myFunc(df['acolumn'],df['bcolumn'])) 貌似只有 ... 指定值作为填充要么就是只能加减乘除某两列得到新列数据如果全部重新计算效率又很低 ...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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284 views

1 answer

ruby - Rails: Filterable nested form checkboxes

I am currently building a label feature, similar to GitHub's label feature, where user's can filter out the label and ... my head for the past 3 days. Any help is appreciated....

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

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451 views

1 answer

MySQL 联合查询并更新到另一个表，求教

A表里有uid,name B表有uid,nick 我想把A表和B表的name,nick 都更新到C表，但是C表可能有对应uid，也可能没有，3个表的uid都设置了主键求教该怎 ... uid,balance from wp_accountinfo); [Err] 1062 - Duplicate entry '325' for key 'PRIMARY'...

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

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