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616 views

1 answer

xcode - macOS更新后Git无法正常运行（xcrun：错误：无效的活动开发人员路径（/ Library / Developer / CommandLineTools）(Git is not working after macOS Update (xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools))

Last night (November 2018) I updated to macOS Mojave, (this will probably work for Catalina too) (昨晚（2018 ... /CommandLineTools/usr/bin/xcrun ask by dustbuster translate from so...

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

0 votes

190 views

1 answer

c# - 何时使用struct？(When to use struct?)

When should you use struct and not class in C#? (什么时候应该在C＃中使用struct而不是class？)My conceptual model is that structs are used ... 结构在语义上意味着什么？) ask by Alex Baranosky translate from so...

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

0 votes

253 views

1 answer

php - 如何在python中使用参数调用PHP脚本(How can I call PHP script with arguments in python)

import subprocess (导入子流程) V1 = 1 #argument1 (V1 = 1＃argument1) V2 = 2 #argumeng2 (V2 = 2＃argumeng2) Output = subprocess. ... )Kindly help. (请帮助 ) ask by kotesh translate from so...

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

0 votes

425 views

1 answer

jquery - 按值设置选择选项“已选择”(Set select option 'selected', by value)

I have a select field with some options in it. (我有一个select字段，其中包含一些选项 )Now I need to select one of those options ... 页面： http ： //jsfiddle.net/9Stxb/) ask by w00 translate from so...

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

0 votes

214 views

1 answer

android - match_parent和fill_parent有什么区别？(What is the difference between match_parent and fill_parent?)

I'm a little confused about two XML properties: match_parent and fill_parent . (我对两个XML属性有点困惑： match_parent和fill_parent )It ... (它们之间有什么区别吗？) ask by vnshetty translate from so...

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

0 votes

864 views

1 answer

python-3.x - 刮Python a(Scraping Python a)

I have 2 tags with different contents inside the href tag and I just want one I was wondering if it is possible for ... com/" </a> ask by Jacksuel Soares Braga translate from so...

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

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612 views

1 answer

dns - 如何解决Windows 10上的“找不到服务器DNS地址”错误？ [关闭](How do I solve the “server DNS address could not be found” error on Windows 10? [closed])

Closed.) 关闭 )) This question is off-topic . 这个问题是题外话 ) It is not currently accepting answers. 它当前不接受答案 ) Want to ... issue? (我该如何解决这个问题？) ask by Dixit Singla translate from so...

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

0 votes

463 views

1 answer

docker - 如何在Docker容器中挂载主机目录(How to mount a host directory in a Docker container)

I am trying to mount a host directory into a Docker container so that any updates done on the host is reflected ... 在何处（除了Dockerfile）？) ask by Kishore Vaishnav translate from so...

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

0 votes

232 views

1 answer

python - 在Python中打印多个参数(Print multiple arguments in Python)

This is just a snippet of my code: (这只是我的代码的一部分：) print("Total score for %s is %s ", name, score) But I want it ... (如果有帮助的话，这就是Python 3.3 ) ask by user1985351 translate from so...

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

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410 views

1 answer

sql - Oracle SQL：使用另一个表中的数据更新表(Oracle SQL: Update a table with data from another table)

Table 1: (表格1：) id name desc ----------------------- 1 a abc 2 b def 3 c adf Table 2: (表2：) id name desc ----- ... 自更新一个表与来自另一个表的数据，但专门针对oracle SQL ) ask by Muhd translate from so...

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

0 votes

309 views

1 answer

python - 如何在k均值聚类算法中选择适合可视化的列？(How to select which columns are good for visualisation in k-Means clustering algorithm?)

I am trying to understand the selection of columns in csv file which should be taken into considerations to apply k-means . ( ... help. (请帮忙 ) ask by Penguin Tech translate from so...

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

0 votes

559 views

1 answer

css - 如何在div中将绝对定位的元素居中？(How to center absolutely positioned element in div?)

I need to place a div (with position:absolute; ) element in the center of my window. (我需要在窗口中心放置一个div （带有position:absolute; ... } Any ideas? (有任何想法吗？) ask by Ish translate from so...

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

0 votes

518 views

1 answer

python - 将对列表转换为最小的DataFrame表示形式？(Converting a list of pairs into smallest possible DataFrame representation?)

The bounty expires in 6 days) . 赏金将在6天后失效) ) Answers to this question are eligible for a +50 reputation bounty. 这个问题的答案有资 ... 像示例中一样，在同一列中定义每对 ) ask by Rob Rose translate from so...

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

0 votes

398 views

1 answer

c++ - 为什么“使用命名空间标准”被认为是不好的做法？(Why is “using namespace std;” considered bad practice?)

I've been told by others that writing using namespace std; (其他人告诉我， using namespace std;编写using namespace std;)in code ... performance? (它会影响性能吗？) ask by akbiggs translate from so...

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

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167 views

1 answer

javascript - 为什么任何JavaScript代码都想“削减绑定”??？(Why does any JavaScript code want to “cut the binding”?)

The reason of using a (使用一个的原因) (0, foo.fn)(); is to cut the binding : the this will not longer be bound to foo ... -pattern or not?) (（是否是反模式？）) ask by nopole translate from so...

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

0 votes

799 views

1 answer

objective-c - Objective-C中的typedef枚举是什么？(What is a typedef enum in Objective-C?)

I don't think I fundamentally understand what an enum is, and when to use it. (我不认为我从根本上理解enum是什么，以及何时使用它 ) For ... declared here? (这里真的被宣布了什么？) ask by Craig translate from so...

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

0 votes

248 views

1 answer

javascript - 什么是VanillaJS？(What is VanillaJS?)

I have one simple question, that got stuck in my mind for a few days: What is VanillaJS? (我有一个简单的问题，在我的脑海里停留了几天 ... 们说 VanillaJS 时我不知道人们在谈论什么 ) ask by user1377911 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# - C＃的隐藏功能？ [关闭](Hidden Features of C#? [closed])

This came to my mind after I learned the following from this question : (从这个问题中学到以下内容 ... Stu (Stu的 DebuggerDisplayAttribute) DebuggerBrowsable and DebuggerStepThrough by bdukes (...

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

0 votes

193 views

1 answer

javascript - 使用angular2和bootstrap将数组数据显示为3列(Display array data to 3 column using angular2 & bootstrap)

In my angular2 component I have listed data and I want to display those data into 3 column by using booststrap class(col-md- ... 给我一个解决方案 ) ask by Mahfuja nilufar translate from so...

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

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435 views

1 answer

javascript - 如何有效地计算JavaScript中对象的键/属性数量？(How to efficiently count the number of keys/properties of an object in JavaScript?)

What's the fastest way to count the number of keys/properties of an object? (计算对象的键/属性数的最快方法是什么？)It it possible to do this ... ，但此属性已在版本4的某个位置删除）) ask by mjs translate from so...

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

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453 views

1 answer

javascript - 如何在JavaScript中合并两个数组并删除重复项(How to merge two arrays in JavaScript and de-duplicate items)

I have two JavaScript arrays: (我有两个JavaScript数组：) var array1 = ["Vijendra","Singh"]; var array2 = ["Singh", "Shakya"]; I ... 项按插入原始数组中的相同顺序获得？) ask by Vijjendra translate from so...

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

0 votes

411 views

1 answer

python - 如何在Python中将字典键作为列表返回？(How to return dictionary keys as a list in Python?)

In Python 2.7 , I could get dictionary keys , values , or items as a list: (在Python 2.7中，我可以将字典键，值或项作为列表获取：) >>> ... ? (我想知道，是否有更好的方法在Python 3中返回列表？) ask by translate from so...

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

0 votes

429 views

1 answer

python - 如何设置当前工作目录？ [重复](How to set the current working directory? [duplicate])

This question already has an answer here: (这个问题在这里已有答案：) How do I change directory (cd) in Python? (如何在Python中更改目录（cd）？ ... ? (如何在Python中设置当前工作目录？) ask by ricardo translate from so...

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

0 votes

469 views

0 answers

hadoop - 如何从HIVE（SQL）的列中删除文本(How do I remove text from columns in HIVE (sql))

I am trying to import data from a CSV file (latlong.csv) and I want to remove all of the quotes from my columns. (我正在尝试 ... , '') error message (错误信息) ask by Alex translate from so...

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

0 votes

357 views

1 answer

python - 通过Anaconda安装时引用PyCharm中的库(Referencing libraries in PyCharm when installed through Anaconda)

Our first semester C++ course requires us to develop an intelligent chatbot for which I have been trying to follow ... /youtu.be/wypVcNIH6D4) ask by Raina Ali translate from so...

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

0 votes

509 views

1 answer

regex - 字母数字和下划线的正则表达式(Regular Expression for alphanumeric and underscores)

我想有一个正则表达式，检查字符串是否只包含大写和小写字母，数字和下划线。 ask by translate from so...

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

0 votes

488 views

1 answer

bash - 将一个子字符串替换为Shell脚本中的另一个字符串(Replace one substring for another string in shell script)

I have "I love Suzi and Marry" and I want to change "Suzi" to "Sara". (我有我爱Suzi和结婚，我想将 Suzi 更改为 ... 这样的：) firstString="I love Sara and Marry" ask by Zincode translate from so...

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

0 votes

355 views

1 answer

git - 如何通过提交消息搜索Git存储库？(How to search a Git repository by commit message?)

I checked some source code into GIT with the commit message "Build 0051". (我使用提交消息 Build 0051 检查了一些源代码到GIT中 ) ... v0.5.0 build 0052. C:Source> ask by Contango translate from so...

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

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