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336 views

1 answer

windows-10 - Spyder-IDE无法在Windows-10上使用Python-3.8启动(Spyder-IDE fails to start on Windows-10 with Python-3.8)

checking out Python-3.8.0 (x64) on Windows-10, I got into trouble when trying to setup Spyder . (在Windows-10上检查Python-3. ... 的问题，请参阅here / here ) ask by MrFuppes translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

361 views

1 answer

git - Android Studio项目的.gitignore应该是什么？(What should be in my .gitignore for an Android Studio project?)

What files should be in my .gitignore for an Android Studio project? (Android Studio项目的.gitignore文件中应该包含哪些文件？) I've ... .iml必须包含在源代码控件中 ) ask by respectTheCode translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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420 views

1 answer

html - 如何在div中垂直对齐文本？(How do I vertically align text in a div?)

I am trying to find the most effective way to align text with a div. (我试图找到最有效的方法来将文本与div对齐 )I have ... mollit anim id est laborum. </div> ask by shinjuo translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

579 views

1 answer

amazon-s3 - 哪种AWS S3检索模型将具有成本效益？(Which AWS S3 retrieval model would be cost-effecient?)

I am looking at this question and have a different opinion: (我在看这个问题，并有不同的看法：) A company is to run a service on AWS to ... 的费用将弥补Expedited检索服务的额外费用 ) ask by mdivk translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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472 views

1 answer

c++ - 什么时候应该使用static_cast，dynamic_cast，const_cast和reinterpret_cast？(When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?)

What are the proper uses of: (的正确用法是：) static_cast dynamic_cast const_cast reinterpret_cast C-style cast (type)value (C样式转换(type) ... 在特定情况下使用哪个？) ask by e.James translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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470 views

1 answer

c# - 为什么在发送SMTP电子邮件时出现“无法分配属性”的信息？(Why do I get “'property cannot be assigned” when sending an SMTP email?)

I can't understand why this code is not working. (我不明白为什么这段代码无法正常工作 )I get an error saying property can ... email body"; client.Send(mail); ask by Sam Stephenson translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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255 views

1 answer

python - 如何集成Python mido和asyncio？(How can I integrate Python mido and asyncio?)

I have a device which does file I/O over MIDI. (我有一台可以通过MIDI文件进行I / O的设备 )I have a script using Mido that downloads ... 我不确定mido回调函数如何获取该对象 ) ask by Mark Green translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

sed - 如何使用sed替换换行符（\ n）？(How can I replace a newline ( ) using sed?)

How can I replace a newline (" \n ") with a space (" (如何将换行符（ \n ）替换为空格（ ) ") using the sed command? ( ）使用sed命 ... ' file How do I fix it? (我如何解决它？) ask by hhh translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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468 views

1 answer

python - TypeError：“模块”对象不可调用(TypeError: 'module' object is not callable)

File "C:UsersAdministratorDocumentsMibotoopslinkserv.py", line 82, in __init__ self.serv = socket(AF_INET,SOCK_STREAM) TypeError: ' ... 答我的问题？) ask by user551717 translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

383 views

1 answer

java - 在Java中从字符串中删除空格(Removing whitespace from strings in Java)

I have a string like this: (我有一个像这样的字符串：) mysz = "name=john age=13 year=2001"; I want to remove the ... 串：) mysz2 = "name=johnage=13year=2001" ask by zyamat translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

267 views

1 answer

python - 使用@property与getter和setter(Using @property versus getters and setters)

Here is a pure Python-specific design question: (这是一个纯Python特定的设计问题：) class MyClass(object): ... def get_my_attr(self): ... ... ，将使用哪种方法，为什么？) ask by Zaur Nasibov translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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532 views

1 answer

java - 如何使用Java中的UTC或GMT获取当前日期和时间？(How can I get the current date and time in UTC or GMT in Java?)

When I create a new Date object, it is initialized to the current time but in the local timezone. (当我创建一个新的Date对象时，它被初始化为当前 ... 取格林尼治标准时间的当前日期和时间？) ask by Behrang translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

374 views

1 answer

css - CSS calc（）函数中的Sass变量(Sass Variable in CSS calc() function)

I'm trying to use the calc() function in a Sass stylesheet, but I'm having some issues. (我正在尝试在Sass样式表中使用calc()函数，但是遇到了 ... 如何让Sass认识到它需要替换calc函数中的变量？) ask by GJK translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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393 views

1 answer

javascript - 使用jQuery更改下拉列表的选定值(Change the selected value of a drop-down list with jQuery)

I have a drop-down list with known values. (我有一个带有已知值的下拉列表 ) What I'm trying to do is set the drop down list ... 我猜是Internet Explorer 6），但这非常令人讨厌 ) ask by phairoh translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

225 views

1 answer

c - C语言中的size_t是多少？(What is size_t in C?)

I am getting confused with size_t in C. I know that it is returned by the sizeof operator. (我对C中的size_t感到困惑我知道它是由sizeof运算 ... i; (或size_t i;) ? (？) ask by Vijay translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

424 views

1 answer

git - 将先前的提交分成多个提交(Break a previous commit into multiple commits)

如果不创建分支并在新分支上进行大量时髦的工作，是否有可能在将一个提交提交到本地存储库之后将其分解为几个不同的提交？ ask by koblas translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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230 views

1 answer

scala - Scala vs. Groovy vs. Clojure [已结束](Scala vs. Groovy vs. Clojure [closed])

Can someone please explain the major differences between Scala, Groovy and Clojure. (有人可以解释Scala，Groovy和Clojure之间的主要区别 ) I ... 间进行简单的比较 ) ask by James Fassett translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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678 views

1 answer

c# - 在C＃中，公共，私有，受保护和没有访问修饰符之间有什么区别？(In C#, what is the difference between public, private, protected, and having no access modifier?)

All my college years I have been using public , and would like to know the difference between public , private , and protected ? ... 么都不做， static做什么呢？) ask by MrM translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

584 views

1 answer

c++ - 运算符重载的基本规则和惯用法是什么？(What are the basic rules and idioms for operator overloading?)

Note: The answers were given in a specific order , but since many users sort answers according to votes, rather than the time they ... 很可能会读懂您的答案）) ask by sbi translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

403 views

1 answer

java - 将DEX反编译成Java源代码(decompiling DEX into Java sourcecode)

如何将Android DEX（VM字节码）文件反编译成相应的Java源代码？ ask by Will translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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385 views

1 answer

jsp - 如果…在JSP或JSTL中(if…else within JSP or JSTL)

I want to output some HTML code based on some condition in a JSP file. (我想根据某些条件在JSP文件中输出一些HTML代码 ) if (condition 1 ... I use JSTL? (我应该使用JSTL吗？) ask by testndtv translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

504 views

1 answer

python - 如何在一个表达式中合并两个字典？(How do I merge two dictionaries in a single expression?)

I have two Python dictionaries, and I want to write a single expression that returns these two dictionaries, merged. (我有两个 ... dict.update() ）) ask by Carl Meyer translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

212 views

1 answer

c++ - Why do we use char* as a buffer, why not a string in boost::asio?

Recently I have been reading a book about network programming with boost::asio, and from what I have understood, buffer is ... Every time, they have to be converted to C strings....

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

0 votes

204 views

1 answer

I would like to push a couple of arrays of data into a 2 dimensions array in Javascript

I would like to push a couple of columns of arrays into a 2 dimensions array in Javascript, adding one column in position 0 and the second ... [0,1,1,1,2], [0,1,1,1,2]] Thanks!...

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

0 votes

305 views

1 answer

python - How to trigger INCRON after file modified by py script executed by apache

I want a simple crontab rule such as : /path/to/file IN_MODIFY echo "Incron triggered" to function on a Linux VM ... , but still not when web modified. Could someone guide me ?...

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

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312 views

1 answer

python - product of two dataframes with new boolean column based on matched values in third dataframe

Suppose I have the following three dataframes: In [55]: df0 Out[55]: m_id 0 m1 1 m2 2 m3 3 m4 In [56]: ... df2 rows match both m_id and c_id Thanks in advance for any suggestions....

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

0 votes

162 views

1 answer

javascript - React Native - Error reading JSON Data properly (Type Error: undefined is not an object)

currently, I'm working on a school project where we have to program an app. We need to get the latitude and Longitude from an address. I ... "key": "CountyName" } ] } } } ] } ] } }...

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

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245 views

1 answer

javascript - Preview an image before it is uploaded

I want to be able to preview a file (image) before it is uploaded. The preview action should be executed all in the ... without using Ajax to upload the image. How can I do this?...

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

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