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python - In what case would I use a tuple as a dictionary key?

I was studying the difference between lists and tuples (in Python). An obvious one is that tuples are ... the caching of function values. 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 - Boolean identity == True vs is True

It is standard convention to use if foo is None rather than if foo == None to test if a value is ... True will be singletons, like None. 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 - UnicodeEncodeError: 'ascii' codec can't encode character u'u2013' in position 3 2: ordinal not in range(128)

I am parsing an XSL file using xlrd. Most of the things are working fine. I have a dictionary where keys are ... I get rid of this error? 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's the difference between git-tf and git-tfs?

I've recently been getting really fed up with TFS. I've heard that there is a light at the end of the ... and which should I try out first? See Question&Answers more detail:os...

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

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tsql - How to use RANK() in SQL Server

I have a problem using RANK() in SQL Server. Here's my code: SELECT contendernum, totals, RANK() OVER ( ... numbers will have the same xRank. 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 - Is there a way to make the Tkinter text widget read only?

It doesn't look like it has that attribute, but it'd be really useful to me. 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 disable password request for a Jupyter notebook session?

I have been launching Jupyter Notebook for years using the following command: jupyter-notebook --port=7000 --no- ... This solved the 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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c# - How to download a file in ASP.NET Core?

In MVC, we have used the following code to download a file. In ASP.NET core, how to achieve this? HttpResponse ... (link)); response.End(); See Question&Answers more detail:os...

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

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iostream - Are there binary memory streams in C++

I usually use stringstream to write into in-memory string. Is there a way to write to a char buffer in binary ... .data == 0x010203; Any ideas? See Question&Answers more detail:os...

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

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ios - Aligning right to left on UICollectionView

this is a pretty straightforward question, but I haven't been able to find a definitive answer to it on SO ... Any help is 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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iPhone UIButton with UISwitch functionality

Is there either a way to implement UISwitch with custom graphics for the switch-states? Or as an ... UIButton with UISwitch functionality? See Question&Answers more detail:os...

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

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svn - How to synchronize two Subversion repositories?

My company has a subsidiary with a slow Internet connection. Our developers there suffer to interact with our ... our version control system. See Question&Answers more detail:os...

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

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sql - How to regex in a MySQL query

I have a simple task where I need to search a record starting with string characters and a single digit after ... innodb engine to be specific. 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 - Floating Div Over An Image

I'm having trouble floating a div over an image. Here is what I am trying to accomplish: .container { border: ... .placehold.it/200x200"> </div> See Question&Answers more detail:os...

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

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Qt jpg image display

I want to display .jpg image in an Qt UI. I checked it online and found http://qt-project.org/doc/qt-4 ... and display images in Qt? 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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c - What is the use of typedef?

What is the use of typedef keyword in C ? When is it needed? 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++ - Use-cases of pure virtual functions with body?

I recently came to know that in C++ pure virtual functions can optionally have a body. What are the real-world use cases for such functions? 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 - Three.JS wireframe material - all polygons vs. just edges

I'm using ThreeJS in a project and noticed that older versions render wireframes differently than newer versions, ... are other differences). See Question&Answers more detail:os...

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

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Django: show a ManyToManyField in a template?

I've got these models in my Django project: class Area(models.Model): name = models.CharField(max_length=100, ... just blank. Can anyone help? See Question&Answers more detail:os...

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

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regex - Regular Expression to exclude set of Keywords

I want an expression that will fail when it encounters words such as "boon.ini" and "http". The goal ... construct for any set of keywords. 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 - Linux Shellcode "Hello, World!"

I have the following working NASM code: global _start section .text _start: mov eax, 0x4 mov ebx, 0x1 mov ecx ... exits fine. Any ideas? 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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c++ - Can't Overload operator<< as member function

I am trying to overload operator<< as a member function. It works if simply do this: friend ostream& operator<< ... function, but not sure why? 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 apply Spring Data projections in a Spring MVC controllers?

Is it possible to specify projection when calling data repository method directly? Here's repository code - ... method called directly? See Question&Answers more detail:os...

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

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Do you know what may cause memory leaks in JavaScript?

Do you know what may cause memory leaks in JavaScript? I am interested in browsers: IE 7, FireFox 3, Safari 3 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 - Tesseract OCR on AWS Lambda via virtualenv

I have spent all week attempting this, so this is a bit of a hail mary. I am attempting to package ... pointers 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 - Creating Custom Overlay on the map

I am trying to replicate this feature of Maps in Android: You can see that on the map, there's a Circle ... can be reached at this link See Question&Answers more detail:os...

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

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multithreading - C++ terminate called without an active exception

I am getting a C++ error with threading: terminate called without an active exception Aborted Here is the code: ... do I fix the error? 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 - Spring cron vs normal cron?

I'm trying to get a cron job working within a legacy Java/Spring/Hibernate project, so I decided to use ... and seems like an antipattern. See Question&Answers more detail:os...

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

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