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python - How to set up a PostgreSQL database in Django

I'm new to Python and Django. I'm configuring a Django project using a PostgreSQL database engine backend, But I'm ... clue on what is going on? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Git - What is the difference between push.default "matching" and "simple"

I have been using git for a while now, but I have never had to set up a new remote repo myself and I ... practice to use or is simple best? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Batch file to copy files from one folder to another folder

I have a storage folder on a network in which all users will store their active data on a server. Now ... to New serverstoragedata & files. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to embed Javascript widget that depends on jQuery into an unknown environment

I'm developing a javascript widget that depends on jQuery. The widget may or may not be loaded onto a ... they would be greatly appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Evenly spacing views using ConstraintLayout

A common use for LinearLayout is to evenly space (weight) views, for example: How do you implement evenly spaced ... post, I/O session video See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - How do I setup a SSL certificate for an express.js server?

Before, in an older version of express, I could do this: express.createServer({key:'keyFile', cert:'certFile'}); ... set the certs? If so how? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to make EditText not editable through XML in Android?

Can anyone tell me how to make an EditText not editable via XML? I tried setting android:editable to false, but it ... ; and it didn't work. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to customize a requirements.txt for multiple environments?

I have two branches, Development and Production. Each has dependencies, some of which are different. Development ... , delete temp branch) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to add header row to a pandas DataFrame

I am reading a csv file into pandas. This csv file constists of four columns and some rows, but does not have a ... to my csv file/pandas df? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - How to use sed to remove the last n lines of a file

I want to remove some n lines from the end of a file. Can this be done using sed? For example, to ... that using sed or some other method. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How to "crop" a rectangular image into a square with CSS?

I know that it is impossible to actually modify an image with CSS, which is why I put crop in quotes. What I' ... like to turn this: Into this: See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - difference between width auto and width 100 percent

Previously my assumption about width: auto was that the width is set to that of the contents. Now I ... describe the differences between these? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jakarta ee - Stateless and Stateful Enterprise Java Beans

I am going through the Java EE 6 tutorial and I am trying to understand the difference between stateless and ... you change it to stateful? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Command dotnet ef not found in .NET Core 3

I'm following the docs in order to create an initial migration. When I execute dotnet, I get the help section ... EntityFrameworkCore (>= 2.2.6) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - After installation of Gulp: “no command 'gulp' found”

After installing gulp.js via npm, I receive a no command 'gulp' found error when running the gulp command ... wrong with my npm installation? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Any shortcut to initialize all array elements to zero?

In C/C++ I used to do int arr[10] = {0}; ...to initialize all my array elements to 0. Is there a similar shortcut in ... ; i++) { arr[i] = 0; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - What is the right way to debug in iPython notebook?

As I know, %debug magic can do debug within one cell. However, I have function calls across multiple ... point within the ipython notebook? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Difference between JVM and HotSpot?

What exactly is HotSpot and how does it relate to JVM and OpenJDK? Is it a library? What exactly ... difference between OpenJDK and HotSpot? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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paradigms - Functional programming and non-functional programming

In my second year of University we were "taught" Haskell, I know almost nothing about it and even ... a non-functional programming language? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What is python's site-packages directory?

The directory site-packages is mentioned in various Python related articles. What is it? How to use it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Are GCC and Clang parsers really handwritten?

It seems that GCC and LLVM-Clang are using handwritten recursive descent parsers, and not machine generated, Bison- ... blog on this topic here See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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642 views

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backbone.js - Webpack ProvidePlugin vs externals?

I'm exploring the idea of using Webpack with Backbone.js. I've followed the quick start guide and has a ... out when to use which. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rest - Rails new vs create

Why is there a need to define a new method in RESTful controller, follow it up with a create method? Google ... are used the way they are. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How do I prevent the padding property from changing width or height in CSS?

I am creating a site with DIVs. Everything's working out except when I create a DIV. I create them like this ( ... . How can I fix this problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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war - "webxml attribute is required" error in Maven

I am getting the following error: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/ ... What could be causing this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How can I truncate table cells, but fit as much as content possible?

Meet Fred. He's a table: <table border="1" style="width: 100%;"> <tr> <td>This cells has more content ... 've all given up all their whitespace? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Stop pip from failing on single package when installing with requirements.txt

I am installing packages from requirements.txt pip install -r requirements.txt The requirements.txt file reads: ... it sees something fail? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Choose folders to be ignored during search in VS Code

Right now when I use ?+O to search for files, the fuzzy matching appears to operate over all files in the ... be ignored for purpose of search? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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