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Recent questions in Technique[技术]

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android - 检索父项时出错：升级到AppCompat v23后，找不到与给定名称匹配的资源(Error retrieving parent for item: No resource found that matches the given name after upgrading to AppCompat v23)

I've always programmed Android with Eclipse and decided to start migrating to Android Studio . (我一直使用Eclipse对Android进行编程，并决定开始迁移 ... ' ，但是没有用 ) ask by Vini.g.fer translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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325 views

1 answer

sql - 这是具有联接的有效相关子查询吗？(Is this a valid correlated sub query with joins?)

So I have a table Car(Car_id, Value, Make) , another table Person(Person_id, Name) and a third table linking the ... SELECT AVG(VALUE) FROM Car); ask by Drakus translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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314 views

1 answer

c# - 使用数据表对重复行的值求和(sum duplicate rows value using datatable)

i have DataTable which can have duplicate rows. (我有可以有重复行的数据表 )In the picture highlighted columns have ... radGridView3.DataSource = new_Table; ask by programmer translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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580 views

1 answer

mysql - 错误：“无法通过套接字'/var/run/mysqld/mysqld.sock'（2）连接到本地MySQL服务器” —缺少/var/run/mysqld/mysqld.sock(error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' — Missing /var/run/mysqld/mysqld.sock)

My problem started off with me not being able to log in as root any more on my mysql install. (我的问题开始于我无法以root用户身份登录mysql ... ? (它不是应该要求管理员密码吗？) ask by dot translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

285 views

1 answer

mysql - php7.4 mysqli超时并“消失”(php7.4 mysqli times out with “gone away”)

I have just installed php7.4, everything seems ok but when I try to go on my phpmyadmin, I can't : Note works ... Packages 100 /var/lib/dpkg/status ask by Michel translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

295 views

1 answer

jquery - 使用jQuery检查输入是否为空(Check if inputs are empty using jQuery)

I have a form that I would like all fields to be filled in. If a field is clicked into and then not filled out, I would ... ? (我究竟做错了什么？) ask by Keith Donegan translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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274 views

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python - 如何找到我的Python site-packages目录的位置？(How do I find the location of my Python site-packages directory?)

我如何找到我的site-packages目录的位置？ ask by Daryl Spitzer translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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314 views

1 answer

python - 如何在Python中获取字符串的子字符串？(How do I get a substring of a string in Python?)

Is there a way to substring a string in Python, to get a new string from the third character to the end of the string? (有没有一 ... 开第一部分，它是否从头开始？) ask by Joan Venge translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

157 views

1 answer

javascript - 如何找到JavaScript中的调用者函数？(How do you find out the caller function in JavaScript?)

function main() { Hello(); } function Hello() { // How do you find out the caller function is 'main'? } Is there a way to ... stack? (有没有办法找出调用堆栈？) ask by Ray Lu translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

416 views

1 answer

javascript - 如何将逗号分隔的字符串转换为数组？(How to convert a comma separated string to an array?)

I have a comma separated string that I want to convert into an array, so I can loop through it. (我有一个逗号分隔的字符串，我想将其转换成数组， ... 想用逗号将其分割，然后将其存储在数组中 ) ask by Blankman translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

146 views

1 answer

html - <和>代表什么？(What do < and > stand for?)

I know that the entities < (我知道实体<)and > (和>)are used for < and > , but I am curious what these names stand ... 之类的东西还是仅仅是代码？) ask by Michiel Pater translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

582 views

1 answer

mysql - 授予**所有**数据库权限(Grant **all** privileges on database)

I've created database, for example 'mydb'. (我创建了数据库，例如'mydb' ) CREATE DATABASE mydb CHARACTER SET utf8 COLLATE utf8_bin; ... @'...' for table 't' ask by marioosh translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

307 views

1 answer

c# - 识别字符串是否为数字(Identify if a string is a number)

If I have these strings: (如果我有这些字符串：) "abc" = false ("abc" = false) "123" = true ("123" = true) "ab2" = false ("ab2 ... ()类的命令，可以识别字符串是否为有效数字？) ask by Gold translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

290 views

1 answer

c# - 在C＃2005中返回多个数据表(Return Multiple DataTable in C# 2005)

I have table1 and table2 in a class.. (我在一个类中有table1和table2 ) public DataTable sampletable (DataTable table1,DataTable table2) ... you (提前谢谢) ask by Sam Casil translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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611 views

1 answer

java - 执行失败：java.io.IOException：无法运行程序“ powershell”：CreateProcess错误= 2，系统找不到指定的文件(Execute failed: java.io.IOException: Cannot run program “powershell”: CreateProcess error=2, The system cannot find the file specified)

An Ant BuildException has occured: The following error occurred while executing this line: C:\Polarion\data\workspace\polarion-data\ ... 何解决此异常吗？) ask by Felix translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

477 views

1 answer

javascript - 正则表达式，用于匹配文本中用小数点和逗号分隔的数字（数量）(Regular expression to match numbers(amount) separated by decimals and comma in text [closed])

Closed) . 已关闭) ) This question needs to be more focused . 这个问题需要更加集中 ) It is not currently accepting answers. 它当前 ... 000,00 2.000,23 4.000.000.000 ask by shams translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

592 views

1 answer

android - 游戏因未知原因在启动时崩溃(Game crashes on start for unknown reason)

I have a unity3d project which, up to previous build, ran with no issues on android. (我有一个unity3d项目，在以前的构建中，它 ... 2019-12-03 11:02:14.123 1161-3607/? I/ActivityManager: ActivityRec...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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967 views

1 answer

spring-kafka - 添加Spring Kafka Maven依赖版本2.2.1.RELEASE遇到ClassNotFoundException(Adding Spring Kafka Maven dependency version 2.2.1.RELEASE encountered ClassNotFoundException)

I wanna use Kafka client in Spring boot. (我想在春季启动中使用Kafka客户端 ) After reading the offical documentaion , I ... version}</version> </dependency> ask by Kai Zhao translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

425 views

1 answer

sql - 有人可以帮助我在PL / SQL Oracle中实现以下触发器吗？(Can someone help me implement the following trigger in PL/SQL Oracle?)

So, (所以，) I have 4 tables: (我有4张桌子：) Suppliers( id_sup, name, city) Products (id_prod, name, city) Companies ( ... update city!'); End if; End; ask by Randiir translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

78 views

1 answer

javascript - 阻止Webpack尝试解决“此”(Prevent Webpack from trying to resolve “this”)

I'm learning more about Webpack and am running into an issue where my use of this at the top level is getting replaced by ( ... 找到该问题的具体答案 ) ask by Jody Heavener translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

429 views

1 answer

flutter - dart在函数参数中添加数据类(dart add data class in function parameter)

i have three methods like these: (我有三种这样的方法：) func1() async { ... var list = (response['contents'] as List).map((i) ... 何做到这一点？)thank you.. (谢谢..) ask by nashihu translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

401 views

1 answer

java - 尝试打印链接列表，但一直给我一个空的列表？ [关闭](Trying to print a linked list but keeps giving me an empty one? [closed])

Closed) . 已关闭) ) This question needs details or clarity . 这个问题需要细节或说明 ) It is not currently accepting ... ); System.out.println(stringLinkedList); } ask by ali translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

511 views

1 answer

delphi - 如何在Delphi 2007上更新Indy 10时解决此错误(How can i fix this error on updating Indy 10 on Delphi 2007)

I'm trying to update Indy on my fresh Windows 10 / Delphi 2007 installation. (我正在尝试在全新的Windows 10 / Delphi 2007安装上更新 ... (我该怎么办？) Thanks (谢谢) ask by delphirules translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

444 views

1 answer

curl - 如何获取curl以返回实际的网站数据(How to get curl to return actual website data)

When I go to thelibertydaily.com with a browser, the site information comes in in full. (当我使用浏览器访问thelibertydaily.com时，站点信息 ... 真实信息吗？) Thanks (谢谢) ask by William translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

291 views

1 answer

python - 亚马逊将Selenium检测为机器人(Amazon is detecting Selenium as bot)

Amazon is detecting Selenium as bot so I changed useragent but problem still persists. (亚马逊将Selenium检测为机器人，因此我 ... =True) offerlisting() save() ask by user1465063 translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

419 views

1 answer

continuous-integration - 如何在github操作中使用pip缓存？(How can I use pip cache in github actions?)

I am having some issues with using cached pip in Github Actions. (我在Github Actions中使用缓存的点数时遇到一些问题 )My workflow setup is ... the cache? (如何使用缓存？) ask by securisec translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

524 views

1 answer

javascript - 在vuetify中使用datepicker创建可扩展的应用栏(creating an expandable app bar with datepicker in vuetify)

I am trying to create an expandable app bar in Vuetify, which shows a datepicker within the app bar when the app bar is ... extended: false } } }) ask by ThomasD translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

753 views

1 answer

ruby-on-rails - ＃的未定义方法“ article_comments_path”是什么意思？ article_new_path(undefined method `article_comments_path' for # Did you mean? articles_new_path)

i am getting an error and i am following ruby on rails guide https://guides.rubyonrails.org/getting_started.html can anyone help ... 则显示此类错误 ) ask by vishal jat translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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