Recent questions in Technique[技术]

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sdn - ONOS死后改行(ONOS Switches Die in Young Age)

Since I upgraded ONOS to the newest version, I am unable to test example programs. (由于我已将ONOS升级到最新版本，因此无法测试示例程序 )When ... 应用程序中可用的基本管道和管道 ) ask by Abidullah Khan translate from so...

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

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r - 分组功能（tapply，by，aggregate）和* apply系列(Grouping functions (tapply, by, aggregate) and the *apply family)

Whenever I want to do something "map"py in R, I usually try to use a function in the apply family. (每当我想在R中做 map ... 或重塑-将plyr或reshape取代所有这些完全？) ask by grautur translate from so...

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

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javascript - node.js收到“ ERR_HTTP_HEADERS_SENT”错误(node.js getting 'ERR_HTTP_HEADERS_SENT' error)

this is my ejs code in node.js, and currently i keep getting this error (这是我在node.js中的ejs代码，目前我一直在收到 ... assertRedirection(url, paramMap); %> ask by Hyun Jong Kim translate from so...

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

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java - 如何将/转换/转换为String？(How to convert / cast long to String?)

I just created sample BB app, which can allow to choose the date. (我刚刚创建了示例BB应用程序，可以选择日期 ) DateField ... Long.parseLong("myStr");)? (？) ask by user225714 translate from so...

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

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node.js - 如何将NodeJS和NPM更新到下一版本？(How can I update NodeJS and NPM to the next versions?)

I just installed Node.js and npm (for additional modules). (我刚刚安装了Node.js和npm （用于其他模块） ) How can I update Node.js and ... section. (我在npm部分中遵循了此步骤 ) ask by Dail translate from so...

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

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android - AppData之外的Xamarin.Forms（UWP和Android）目录选择(Xamarin.Forms (UWP and Android) directory selection outside of AppData)

I've been pulling my hair out all day. (我整天都在拔头发 )I'm converting my WPF app to Xamarin.Forms (UWP, IOS and ... Forms )Please help me! (请帮我！) ask by dbooher2011 translate from so...

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

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java - PreferenceFragment.findPreference始终返回NULL(PreferenceFragment.findPreference always returns NULL)

I'm currently trying to make a settings menu, that will show a MultiSelectListPreference , to select multiple contacts from ... 题吗？) ask by Wesley De Keirsmaeker translate from so...

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

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zsh - 如何在$ XDG_CONFIG_HOME中进行zsh搜索配置(How to make zsh search configuration in $XDG_CONFIG_HOME)

Looking to make my ~ a cleaner place, I would like to move as much user configuration files into $XDG_CONFIG_HOME , which is ... ? (您将如何进行？) ask by psychoslave translate from so...

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

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swift - Swift Combine：检查Subject是否有观察者？(Swift Combine: Check if Subject has observer?)

在RxSwift中，我们可以使用hasObserver检查*Subject是否有任何观察者，如何在例如PassthroughSubject Combine中做到这一点？ ask by Sajjon translate from so...

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

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python - 如何在Python中创建常量？(How do I create a constant in Python?)

Is there a way to declare a constant in Python? (有没有办法在Python中声明常量？)In Java we can create constant values in this manner ... 述Java常量声明的等效项是什么？) ask by zfranciscus translate from so...

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

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c# - C＃鼠标钩(Mouse hook with C#)

I am trying to emulate "hardware" mouse clicks as it appears that some software blocks input from PostMessage for instance. (我试图模 ... (任何帮助表示赞赏:)) ask by miceiken translate from so...

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

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326 views

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python - 静态方法和类方法之间的区别(Difference between staticmethod and classmethod)

用@staticmethod装饰的函数和用@staticmethod装饰的函数有@staticmethod @classmethod ？ 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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performance - 使用int64而不是int32时，for循环性能要慢得多(For loop performance much slower when using int64 instead of int32)

I am trying to figure out the best practices regarding performance. (我正在尝试找出有关性能的最佳做法 )I have noticed ... 0.403s Success: Benchmarks passed. ask by Kingindanord translate from so...

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

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webserver - 应用程序服务器和Web服务器之间有什么区别？(What is the difference between application server and web server?)

应用程序服务器和Web服务器之间有什么区别？ ask by TwiggedToday translate from so...

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

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git - 如何取消本地git提交(How to cancel a local git commit)

My issue is I have changed a file eg: README, added a new line ' this for my testing line ' and saved the file, then I ... 内容并取消我的本地提交？) ask by Amal Kumar S translate from so...

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

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c# - 如何获取代码所在的程序集的路径？(How do I get the path of the assembly the code is in?)

Is there a way to get the path for the assembly in which the current code resides? (有没有办法获取当前代码所在的程序集 ... ().Location与上一个相同 ) ask by George Mauer translate from so...

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

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css - 从Chrome中的css自定义样式按钮中删除蓝色边框(Remove blue border from css custom-styled button in Chrome)

I'm working on a web page, and I want custom-styled <button> tags. (我正在开发一个网页，我想要自定义样式的<button>标签 ) ... :active { outline: none; border: none; } ask by eshellborn translate from so...

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

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windows - 从命令行列出所有环境变量？(List all environment variables from command line?)

I'd like to know if it's possible to list ALL environment variables from Windows' Command Prompt. (我想知道是否可以从Windows的命令 ... ls env:或dir env: ) ask by Nicola Cossu translate from so...

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

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git - 如何显示已上演的更改？(How do I show the changes which have been staged?)

I staged a few changes to be committed; (我上演了一些改变来承诺;)how can I see the diff of all files which are staged for the next ... 行，我可以创建一个别名，对吗？) ask by Frerich Raabe translate from so...

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

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552 views

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git - 我可以删除git commit但可以保留更改(Can I delete a git commit but keep the changes)

In one of my development branches, I made some changes to my codebase. (在我的一个开发分支中，我对代码库进行了一些更改 )Before I was ... 更改 )Is that possible? (那可能吗？) ask by tanookiben translate from so...

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

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node.js - Azure DevOps自定义任务扩展：powershell.exe / node.exe退出代码：5(Azure DevOps Custom Task Extension: powershell.exe / node.exe exit code: 5)

I have PowerShell Script as a custom task inside a Build pipeline. (我将PowerShell脚本作为Build管道中的自定义任务 )The steps of these tasks are ... 为我不知道这里发生了什么 ) ask by Mar Tin translate from so...

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

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c++ - 带发布的std :: vector <>的自定义分配器？(Custom allocator for std::vector<> with release?)

I am working with a 3rd party C API set in C++ that has two methods of concern for this discussion: (我正在使用C ++中的第3方C ... 不同类型，所以它们无法使swap（）正常工作 ) ask by NuSkooler translate from so...

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

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1 answer

html - 标签空间而不是多个不间断的空格（“nbsp”）？(Tab space instead of multiple non-breaking spaces (“nbsp”)?)

Is it possible to insert a tab character in HTML instead of having to type   (是否可以在HTML中插入制表符而不必键入 )four times? (四次？) ask by Roch translate from so...

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

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590 views

1 answer

spring - PreAuthorize中的自定义方法不起作用“无法评估表达式'isAdmin（）'”(Custom method in PreAuthorize is not working “Failed to evaluate expression 'isAdmin()'”)

@Configuration @EnableGlobalMethodSecurity(prePostEnabled = true) public class MethodSecurityConfig extends GlobalMethodSecurityConfiguration { ... P Satish Patro translate from so...

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

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155 views

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git - “下游”和“上游”的定义(Definition of “downstream” and “upstream”)

I've started playing with Git and have come across the terms "upstream" and "downstream". (我已经开始玩Git并遇到过上游和下游这两个词 )I' ... 理工具）和源代码的上下文中意味着什么？) ask by brendan translate from so...

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

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532 views

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c# - 在C＃中将字符串转换为枚举(Convert a string to an enum in C#)

What's the best way to convert a string to an enumeration value in C#? (在C＃中将字符串转换为枚举值的最佳方法是什么？) I have an HTML ... valid code. (但这不是有效的代码 ) ask by Ben Mills translate from so...

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

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440 views

1 answer

java - 如何在Java中生成特定范围内的随机整数？(How do I generate random integers within a specific range in Java?)

How do I generate a random int value in a specific range? (如何生成特定范围内的随机int数值？) I have tried the following ... ` can be smaller than `minimum`. ask by user42155 translate from so...

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

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335 views

1 answer

javascript - 使用JavaScript在文本框中的Enter键上触发按钮单击(Trigger a button click with JavaScript on the Enter key in a text box)

I have one text input and one button (see below). (我有一个文本输入和一个按钮（见下文） )How can I use JavaScript to ... ="Search" onclick="doSomething();" /> ask by kdenney translate from so...

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

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