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579 views

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angular - 成功在服务中调用订阅后获取未定义(Getting Undefined after subscribe successfully called in Service)

actually am new in angular and am trying to create an recipe app so here what i have created an recipes service in which ... false) }) }) } ask by Himanshu Rahi translate from so...

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

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440 views

1 answer

ruby-on-rails - 如何按属性长度对ActiveRecords列表进行排序？(How can I sort a list of ActiveRecords by an attribute length?)

I have an object like this: (我有一个这样的对象：) irb(main):076:0> hints = Hint.where("sentence LIKE ?","%你%" ... am using PostgreSQL. (我正在使用PostgreSQL ) ask by webmagnets translate from so...

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

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441 views

1 answer

git - 如何使Git使用我选择的编辑器进行提交？(How do I make Git use the editor of my choice for commits?)

I would prefer to write my commit messages in Vim, but it is opening them in Emacs. (我更愿意在Vim中编写我的提交消息，但是它正在Emacs中打开它们 ... 局执行此操作，而不仅仅是针对单个项目 ) ask by brasskazoo translate from so...

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

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477 views

1 answer

git - 如何处理主机存储库中标记为“未跟踪”的git子模块文件夹？(How to handle folder of git submodule which is marked as “untracked” in the host repo?)

I've got a code base in which I want to add another repo as a submodule to do some integration testing. (我有一个代码库，我 ... tips are welcome! (欢迎所有提示！) ask by kramer65 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

android - 如何在Android应用程序的“活动”之间传递数据？(How do I pass data between Activities in Android application?)

I have a scenario where, after logging in through a login page, there will be a sign-out button on each activity . (我有一种情况，在 ... case (这种情况的任何替代方法) ask by UMAR translate from so...

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

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348 views

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javascript - var关键字的目的是什么？何时应使用（或省略）？(What is the purpose of the var keyword and when should I use it (or omit it)?)

NOTE : This question was asked from the viewpoint of ECMAScript version 3 or 5. The answers might become outdated with the ... ？为什么/会做什么？) ask by Alex translate from so...

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

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361 views

1 answer

c# - 如何存储大量异常，然后作为Web API的响应返回？(How can I store a bunch of exceptions and return then as the response of an web API?)

So I'm trying to import a bunch of data from an excel to a DB in my Web Api, this data is being validate using ... 所有异常，然后再返回呢？) ask by Rogerio Schmitt translate from so...

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

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419 views

1 answer

c# - 当覆盖Equals方法时，覆盖GetHashCode为什么很重要？(Why is it important to override GetHashCode when Equals method is overridden?)

Given the following class (鉴于以下课程) public class Foo { public int FooId { get; set; } public string FooName { get; ... (重写GetHashCode为什么很重要？) ask by David Basarab translate from so...

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

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336 views

1 answer

node.js - npm WARN package.json：没有存储库字段(npm WARN package.json: No repository field)

I installed Express.js with the following command: (我使用以下命令安装了Express.js：) sudo npm install -g express I get the following ... worried? (我应该担心吗？) ask by JR Galia translate from so...

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

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290 views

1 answer

git - 如何使用git merge --squash？(How to use git merge --squash?)

I have a remote Git server, here is the scenario which I want to perform: (我有一个远程Git服务器，这是我要执行的方案：) For each bug/feature ... 一次提交（我什至想为此提供提交消息）？) ask by SunnyShah translate from so...

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

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328 views

1 answer

javascript - 通过onclick函数更改div(Change divs through onclick function)

Currently I have some code that looks like so; (目前，我有一些类似的代码；) <div id="welcome"> <div style="text-align: center;"> <h1 style ... 并且使用不同的技术，但是我无法弄清楚！) ask by tttt translate from so...

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

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1.0k views

1 answer

ascii - EBCDIC到ASCII的转换：使用JRecord将ASCII记录写入文件(EBCDIC to ASCII conversion: writing ascii records to a file using JRecord)

After conversion of ebcdic file to ascii using JRecordInterface1 and ICobolBuilder, when i try to write these records to a file ... (提前致谢) ask by Jitu Vyas translate from so...

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

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582 views

1 answer

google-cloud-platform - 主机名未在同一网络中解析为CE(Hostname not resolving for CE in same network)

I'm doing a deployment of 4 CE in 2 different zones (bastion in europe-west1-c and the other ones in ... External NAT type: ONE_TO_ONE_NAT ask by Pedro Gordo translate from so...

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

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479 views

1 answer

javascript - Codemirror和Xtext-自动补全弹出窗口不显示(Codemirror and Xtext - Autocompletion popup not showing)

I'm working on a DSL and try to customize the webEditor. (我正在使用DSL，并尝试自定义webEditor )Using the editor works fine as well as ... 何键盘输入后获得自动完成功能 ) ask by orangeblend translate from so...

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

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467 views

1 answer

bash - 如何递归计算目录中的所有代码行？(How to count all the lines of code in a directory recursively?)

We've got a PHP application and want to count all the lines of code under a specific directory and its subdirectories. (我们有一个 ... 所有文件的正确语法是什么？) ask by user77413 translate from so...

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

0 votes

466 views

1 answer

python - 在现代Python中声明自定义异常的正确方法？(Proper way to declare custom exceptions in modern Python?)

What's the proper way to declare custom exception classes in modern Python? (在现代Python中声明自定义异常类的正确方法是什么？)My primary goal is ... ? (好像要打很多笔，有必要吗？) ask by Nelson translate from so...

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

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253 views

1 answer

python - 根据先前定义的类型确定代码模式块的类型(Determining the type of code pattern block from previously defined types)

I need an example of a machine learning algorithm to find previously defined patterns of code block structures. (我需要一个机器学习算法的示例 ... 解决此问题，我将不胜感激！) ask by Quateron translate from so...

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

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342 views

1 answer

swift - Swift中的内部变量(Internal var in Swift)

How can I fill bellow class from my viewController for show in UITableView : (如何填充我的viewController波纹管class以在UITableView显示 ... var Title: String? } ask by PEDY translate from so...

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

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285 views

1 answer

javascript - 如何在JavaScript中的POST请求URL中传递变量？(How do I pass a variable inside a POST request URL in JavaScript?)

I am trying to pass a variable that is derived from a database (and keeps changing) to a fetch URL. (我试图将派生自数据库的变量（并不断更改 ... 道如何做 )Any help? (有什么帮助吗？) ask by levi translate from so...

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

0 votes

230 views

1 answer

python - 列表理解与lambda +过滤器(list comprehension vs. lambda + filter)

I happened to find myself having a basic filtering need: I have a list and I have to filter it by an attribute of the ... 例如，使用itemgetter而不是lambda）吗？) ask by Agos translate from so...

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

0 votes

534 views

1 answer

devise - devise和devise_token_auth在路由上不起作用(devise and devise_token_auth don't work togethor with routes)

I have successfully implemented devise_token_auth and i am trying to implement regular devise. (我已经成功实现了devise_token_auth，并且我正在尝试 ... (有任何想法吗？) ask by Philip7899 translate from so...

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

0 votes

418 views

1 answer

css-float - 如何居中浮动元素？(How do I center floated elements?)

I'm implementing pagination, and it needs to be centered. (我正在实现分页，它需要居中 )The problem is that the links need to be displayed as ... (为了得到这个主意，我想要什么：) ask by Mike translate from so...

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

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210 views

1 answer

python - 如何在Python中弹出一次列表n次？(How to pop() a list n times in Python?)

I have a photo chooser function that counts the number of files in a given directory and makes a list of them. (我有一个图片 ... ) + '.jpg')) return photos ask by Timur translate from so...

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

0 votes

174 views

1 answer

javascript - Firestore功能Console.log(Firestore Function Console.log)

What am I missing? (我想念什么？)Trying to use console.log() to debug a Firestore function. (尝试使用console.log（）调试Firestore函数 )The ... any ideas! (感谢您的任何想法！) ask by tomN translate from so...

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

0 votes

193 views

1 answer

python - 如何确定Python变量的类型？(How to determine a Python variable's type?)

How do I see the type of a variable whether it is unsigned 32 bit, signed 16 bit, etc.? (如何查看变量的类型，无论是无符号32位，带符号 ... How do I view it? (我该如何看待它？) ask by user46646 translate from so...

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

0 votes

145 views

1 answer

python - GIF没有在乌龟里玩(GIF is not playing in turtle)

I want the GIF to play in the turtle screen. (我希望GIF在乌龟屏幕中播放 )But it is showing only the still image. ... window down : turtle.mainloop() ask by Andrew whiteman translate from so...

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

0 votes

141 views

1 answer

javascript - 什么是console.log？(What is console.log?)

What is the use of console.log ? (console.log什么用？) Please explain how to use it in JavaScript, with a code example. (请通过代码示例说明如何在JavaScript中使用它。) ask by Mihir translate from so...

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

0 votes

239 views

1 answer

python - 在Python中最快的HTTP GET方法是什么？(What is the quickest way to HTTP GET in Python?)

What is the quickest way to HTTP GET in Python if I know the content will be a string? (如果我知道内容将是字符串，那么用Python进行 ... 要捕获脱壳输出到wget或curl的输出 ) ask by Frank Krueger translate from so...

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

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