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How to close sqlalchemy connection in MySQL

This is a sample code I'd like to run: for i in range(1,2000): db = create_engine('mysql:// ... connection from sqlalchemy. Thanks in advance! See Question&Answers more detail:os...

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

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ruby on rails - "Incomplete response received from application" from nginx / passenger

I tried to deploy my rails app on nginx and ubuntu via capistrano like the tutorial on the page https://gorails.com ... i figure out what to do? See Question&Answers more detail:os...

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

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359 views

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How to launch python Idle from a virtual environment (virtualenv)

I have a package that I installed from a virtual environment. If I just launch the python interpreter, that ... virtualenv would be available? See Question&Answers more detail:os...

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

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Difference in the paths in .gitignore file?

I've been using git but still having confusion about the .gitignore file paths. So, what is the difference ... that second line path mean? 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 - How does Class.forName() work?

I just learned about java.sql package. It uses Class.forName() to dynamically load the driver which extends ... I will be very happy. See Question&Answers more detail:os...

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

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Unit testing a Java Servlet

I would like to know what would be the best way to do unit testing of a servlet. Testing internal methods ... server or something like that? See Question&Answers more detail:os...

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

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windows - Win32 - Backtrace from C code

I'm currently looking for a way to get backtrace information under Windows, from C code (no C++). I ... use something else than SymFromAddr. See Question&Answers more detail:os...

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

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VB6 IDE cannot load MSCOMCTL.OCX after update KB 2687323

After windows update installed security update KB2687323, my VB6 project fails to load. Displayed error message is " ... load the upgraded OCX. 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 - Override the {...} notation so i get an OrderedDict() instead of a dict()?

Update: dicts retaining insertion order is guaranteed for Python 3.7+ I want to use a .py file like a config file. So ... , ('C key', 'value3')] 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 - FCM (Firebase Cloud Messaging) Push Notification with Asp.Net

I have already push the GCM message to google server using asp .net in following method, GCM Push Notification with Asp ... .net let me know.. 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 stop IntelliJ truncating output when I run a build?

When I run our build from IntelliJ it pumps out a lot of debugging. But it gets truncated in the Run console. ... Or, preferably, all of 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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What does it mean when MySQL is in the state "Sending data"?

What does it mean if the Mysql query: SHOW PROCESSLIST; returns "Sending data" in the State column? I imagine it ... to an hour). Thank you. 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 replace deprecated android.support.v4.app.ActionBarDrawerToggle

Yesterday (17-10-2014) I have update Android SDK and support-library-v4.jar of my App, now I get ... is correctly added in project dependencies See Question&Answers more detail:os...

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

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properties - c# foreach (property in object)... Is there a simple way of doing this?

I have a class containing several properties (all are strings if it makes any difference). I also have a ... getting into anything too complex? 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 - When to close MongoDB database connection in Nodejs

Working with Nodejs and MongoDB through Node MongoDB native driver. Need to retrieve some documents, and make ... connection needs to open? See Question&Answers more detail:os...

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

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Scala multiple type pattern matching

I'm wondering how can I use multiple type pattern matching. I have: abstract class MyAbstract case class MyFirst ... )). Thanks in advance! 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 - Add an object to an ArrayList and modify it later

If I have an ArrayList, and I added an object to it, and later I modified this object, will this change ... in the ArrayList now null too? See Question&Answers more detail:os...

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

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352 views

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Create parameterized VIEW in SQL Server 2008

Can we create parameterized VIEW in SQL Server 2008. Or Any other alternative for 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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How to set the image from drawable dynamically in android?

I am storing my project related images in drawable folder. Also I am storing the image names in string ... image name. Thanks in advance See Question&Answers more detail:os...

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

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asp.net web api - MVC5, Web API 2 and Ninject

I have created a new MVC5 project with Web API 2, I then added the Ninject.MVC3 package from NuGet. Constructor ... ).InRequestScope(); } } } 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 annotate Count with a condition in a Django queryset

Using Django ORM, can one do something like queryset.objects.annotate(Count('queryset_objects', gte=VALUE)). Catch my ... not much to go 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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Why can't Java constructors be synchronized?

According to the Java Language Specification, constructors cannot be marked synchronized because other threads cannot see ... know the answer. 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 - Paramiko's SSHClient with SFTP

How I can make SFTP transport through SSHClient on the remote server? I have a local host and two remote ... work with Paramiko's SSHClient? See Question&Answers more detail:os...

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

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406 views

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Python Multiprocessing.Pool lazy iteration

I'm wondering about the way that python's Multiprocessing.Pool class works with map, imap, and map_async. My ... as needed? Thanks, Gabe 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 - automatically position text box in matplotlib

Is there a way of telling pyplot.text() a location like you can with pyplot.legend()? Something ... manually estimating the position. 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++ - Cleaning up an STL list/vector of pointers

What is the shortest chunk of C++ you can come up with to safely clean up a std::vector or std::list ... wrap my pointers with smart pointers. See Question&Answers more detail:os...

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

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666 views

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visual studio - how to implement regions/code collapse in javascript

How can you implement regions a.k.a. code collapse for JavaScript in Visual Studio? If there are hundreds of ... /C#. #region My Code #endregion See Question&Answers more detail:os...

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

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503 views

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java - console.writeline and System.out.println

What exactly is the technical difference between console.writeline and System.out.println? I know that System. ... for console.writeline. See Question&Answers more detail:os...

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

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