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811 views

1 answer

原生的Promise的微任务是怎么实现的

看别人参照A+规范写的都是setTimeout,所以很想知道原生的Promise的微任务是怎么实现的...

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

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812 views

1 answer

正则表达式如何写递增数列？

匹配ABC。ABC都是数字，要求ABC是递增的。比如123,456. 谢谢...

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

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844 views

1 answer

关于SpringDataJPA和MapStruct的使用

我使用SpringDataJpa进行多表关联,其中几个实体类的对应情况如下: User: public class User extends BaseEntity { private String username; private String password; ... 联的信息,并且使用mapStruct进行转换成userVO,请问这个该怎么转化呢?...

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

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1.3k views

1 answer

tomcat8 - Where do I find tomcat confirguration file for JBoss Web Server Tomcat 8?

I deployed my war file by JWS 3.1 Tomcat 8 but I couldn't find tomcat configuration file. Also, there is no any supporting documents in the official website. Please help! Thanks!...

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

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965 views

1 answer

elementUI的表格最后一列加开关组件

结构：本地静态数据：处理事件函数：能正常的开关，但是会报错：解决方法：这是组件里的相关属性设置逻辑里面点击开关就改变状态 Data里面设置的默认值可以正常使用了！...

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

0 votes

1.3k views

1 answer

es分词疑问

业务数据里有个描述字段包含cjx1，cjx2（中间，开头或者结尾）等，我用query_string 搜索cjx ,无法搜出任何结果，必须用cjx1或者cjx*,请问我能做到直接用cjx搜索出cjx1和cjx2吗...

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

0 votes

1.5k views

1 answer

如何用命令行开启数据节点

官方手册上看到的关于启动数据节点的方式是,进入到localhost:8848控制节点的web页面,通过页面启动. https://github.com/dolphindb/... 上述链接中给出可以在控制节点通过 startDataNode([" ... dolphin进入命令行界面启动数据节点,命令是怎样的,就像类似启动控制节点和代理节点一样?...

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

0 votes

2.5k views

1 answer

swift - SwiftUI: how to pass an array to a View to be used in ForEach

I would like to pass an array of elements to a View and show the elements with a ForEach. When I pass an array of a ... } } } } Is there a way to achieve the desired result?...

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

0 votes

2.5k views

1 answer

swift - alamofire post login response and navigation

I used Alamofire to make a login page on my app, I managed to log in using the below request @IBAction ... to another viewcontoller if success and show error message in failure?...

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

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2.4k views

1 answer

vue公用组件多项目使用问题

操作步骤若代码为私有的模块，因为某些原因不能发布到公共的npm仓库，但是又需要在多个项目间共享解决方法：可以在package.json中来使用git url获取特定的公用代码 ... gavinzhuleivue-form-making.git" as it does not contain a package.json file. 求各位大佬指指点点...

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

0 votes

2.6k views

1 answer

layout - Toolbar in android

Is there any tutorial easy to understand to create a toolbar with the home button aligned to the left and the log out ... app:showAsAction="ifRoom" /> </menu> Thanks for support!...

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

0 votes

2.9k views

1 answer

A question about the execution sequence in Javascript Iterator

class iteratorWithoutG { [Symbol.iterator]() { let val = 0; let threshold = 10; return { next() { if(val >= ... it be displayed before the Array?? Was the Array stored somewhere?...

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

0 votes

3.7k views

1 answer

reactjs - How to import npm package in react?

I want to import ibantools but it does not work with require. It says require is undefined. How can I use this package? const ibantools = require("ibantools")...

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

0 votes

3.5k views

1 answer

Tomcat doesnot redirect to custom error page

Catalina logs shows WARNING [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule] {Server/Service/Engine/ ... . Is there any way to solve this issue?...

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

0 votes

2.9k views

1 answer

请教怎么把表2某列的值加到表1相应列上

比如我在DolphinDB中有下面2张表： code=`A`B`C`D`E totalValue=10 20 30 40 50 t1=keyedTable(`code,code,totalValue) t2 = table ... code的totalValue上,使得 totalValue = totalValue + t2.value，这个应该怎么处理？...

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

0 votes

3.6k views

1 answer

Install openshift 4.5 on existing VPC in AWS

Very new to openshift and I am trying to install openshift 4.5 in our AWS environment in exiting VPC without ... fips: false sshKey: | ssh-rsa 3miJ9QzqQi8jVD publish: Internal...

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

0 votes

3.5k views

1 answer

windows - Replace First Occurrence Only of Pipe Character in String

I need to remove an extra pipe character at the end of header row of a pipe delimited csv file with sed. The ... get the syntax correct. Any suggestion on how to accomplish this?...

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

0 votes

3.6k views

1 answer

php mysql 如何获取连续出现3次的相同字符的数据

如下表格: ID PID CONTENT 1 1 OK 2 1 ERROR 3 1 ERROR 4 1 ERROR 5 1 OK 6 2 ERROR 7 2 OK 8 2 ERROR 9 2 OK 10 2 ERROR 11 2 OK 如何找出pid为1，content连续3次为error的数据...

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

0 votes

4.3k views

1 answer

python - Cant click button with selenium

I was making a webscraper with selenium and bs4 to keep some shopping items' stock in track, there is a load more button ... help me out Am I was passing too many classes at once?...

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

0 votes

3.9k views

1 answer

使用django和jquery异步上传文件后台获取不到数据？

我这是那写错了后台获取不到数据呢？ <script> $(function () { $('#number').click(function () { var form_info = new FormData(); var ... 这个对象包含了文件的名字，二进制内容 image_info=request.FILES.get('file_obj')...

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

0 votes

4.4k views

1 answer

CentOS无法启动MongoDB

我的系统版本是CentOS8 MongoDB版本是4.x https://docs.mongodb.com/manu... 我用的官方的安装方法 MongoDB已经安装成功，但是运行 service mongod start 报错度娘查了很久未得结果，还望指点迷津，谢谢！...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.3k views

1 answer

Zabbix 5.0 API method problem.get: how to get a list of unacknowledged problems?

Please help me to solve this problem: I need to get a list of all unacknowledged problems from Zabbix 5.0.4 via API. When ... . Why is that? What am I doing wrong? Tell me please....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.3k views

1 answer

go - Delete empty lines in CSV

I'm trying to clean up a CSV file that is builded like this: ;Header1;Header2;Header3; ;;;; ;1;2;3; ;;;; How can I detect ... line (call r.Read()?) err = w.Write(rec) } w.Flush()...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.4k views

1 answer

protoc生成c++代码，相同protoc版本在不同机器上生成的不一致

protoc版本都是3.11.2，用的同一份.proto文件生成正常机器生成的代码：异常机器生成的代码：异常机器上生成的代码出现了很多条件编译代码，不知道是因为什么原因产生的，求大佬帮忙看看！！...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.1k views

1 answer

友盟集成: 'RNUMConfigure.h' file not found

参考文档： https://developer.umeng.com/d... 运行后报错： 'RNUMConfigure.h' file not found 请问这是哪里出了问题呢？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.3k views

1 answer

Find and replace text with pattern in R

I have a df here below and I need to delete under only the column FRUIT that contains any text with [...]. Please see my ... 1100, 1151-1152] USA 2 2010-01-01 Pinapple [22] USA 12...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.6k views

1 answer

mysql - Is it possible to set MYSQL_PS1 with colors without messing up prompt line width calculation?

Consider the following setting for MySQL_PS1: GREEN="$(echo -e '33[01;32m')" BLUE="$(echo -e '33[01;34m ... to set colors in MYSQL_PS1 without messing up the estimated line length?...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.0k views

1 answer

android - AOSP build display all PRODUCT_PACKAGES variable in .mk file

I'm trying to build an AOSP rom. How can I display all variables in PRODUCT_PACKAGES in my target .mk file? Here is my ... type is for parameter $(1) or how to access it. Thanks....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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