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ios - How can I delay a method call for 1 second?

Is there an easy way delay a method call for 1 second? I have a UIImageView that reacts on a touch ... can't use the animationDidStop selector. 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 HTTP "Host" header?

Given that the TCP connection is already established when the HTTP request is sent, the IP address and port ... implied in the TCP connection? 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 do I undo a checkout in git?

I just checked out an earlier commit from my local git repo. I haven't made any changes to it, I was ... . Did I accidentally delete those? 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 - Set order of columns in pandas dataframe

Is there a way to reorder columns in pandas dataframe based on my personal preference (i.e. not alphabetically or ... this case. Many 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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python - Matplotlib - How to plot a high resolution graph?

I've used matplotlib for plotting some experimental results (discussed it in here: Looping over files and ... looking for: example graph See Question&Answers more detail:os...

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

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postgresql - Postgis installation: type "geometry" does not exist

I am trying to create table with Postgis. I do it by this page. But when I import postgis.sql file, I get a ... anybody know how can I fix 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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python - Operation on every pair of element in a list

Using Python, I'd like to compare every possible pair in a list. Suppose I have my_list = [1,2,3,4] I' ... but that doesn't seem very pythonic. 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 many String objects will be created when using a plus sign?

How many String objects will be created when using a plus sign in the below code? String result = "1" + "2" ... , but that's not the question. See Question&Answers more detail:os...

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

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filesystems - One-liner to recursively list directories in Ruby?

What is the fastest, most optimized, one-liner way to get an array of the directories (excluding files) in Ruby? How about including 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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macos - What is the best/safest way to reinstall Homebrew?

I am getting issues with permissions in Homebrew: After I installed Node and tried to install npm using the curl ... /local/.git already exists! 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: OperationalError No Such Table

I'm building a fairly simple application, research, in my Django project that uses Django-CMS. (It ... " apphook_pool.register(ResearchApp) See Question&Answers more detail:os...

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

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gradle - Best way to incorporate Volley (or other library) into Android Studio project

I've seen different advice on the best way to do this This question covers creating a jar. Elsewhere, I've ... do that, would be 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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jvm - What is the point of invokeinterface?

I'm reading this article about how JVM invokes methods, and I think I got most of it. However, I'm still ... actual type. What am I missing? 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 - Exception Logging for WCF Services using ELMAH

We are using the excellent ELMAH to deal with unhandled exceptions in an ASP.NET 3.5 web application. This works ... is null in this scope. See Question&Answers more detail:os...

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

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macos - How do I make a python script executable?

How can I run a python script with my own command line name like 'myscript' without having to do 'python myscript.py' in the terminal? See Question&Answers more detail:os...

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

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sublimetext3 - How to edit Sublime Text build settings?

I want to enable -std=gnu++11 in Sublime Text 3's C++ Single File build on Ubuntu 12.04. I have already ... How can I edit the build settings? 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 understand the term `tensor` in TensorFlow?

I am new to TensorFlow. While I am reading the existing documentation, I found the term tensor really confusing. ... they all types of tensors? See Question&Answers more detail:os...

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

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592 views

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active directory - Configure ASP.NET MVC for authentication against AD

What are the high level steps to authenticate users of an ASP.NET MVC application against Active Directory? I ... on a specific AD domain. 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: How do I dynamically instantiate an object and invoke a method using reflection?

In Scala, what's the best way to dynamically instantiate an object and invoke a method using reflection? I would ... Scala - Heaven and Hell. 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 - Resume NSUrlSession on iOS10

iOS 10 is going to be released soon so it worth to test applications for compatibility with it. During such ... be fixed on application side? See Question&Answers more detail:os...

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

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Convert DateTime to String PHP

I have already researched a lot of site on how can I convert PHP DateTime object to String. I always see " ... date time echo strlen($dts); 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 can I get dictionary key as variable directly in Python (not by searching from value)?

Sorry for this basic question but my searches on this are not turning up anything other than how to get a ... value get(key[, default]) See Question&Answers more detail:os...

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

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go - How to get the number of characters in a string

How can I get the number of characters of a string in Go? For example, if I have a string "hello" the ... encoded with two bytes in UTF-8. See Question&Answers more detail:os...

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

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527 views

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android - FragmentPagerAdapter getItem is not called

I am not able to reuse fragment in FragmentPagerAdapter.. Using destroyItem() method, It is deleting the ... (), res2)); See Question&Answers more detail:os...

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

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Simpler way to put PDB breakpoints in Python code?

Just a convenience question. I've been a bit spoiled with debuggers in IDEs like Visual Studio and XCode. I find it ... what you see in an IDE? See Question&Answers more detail:os...

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

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200 views

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What is a handle in C++?

I have been told that a handle is sort of a pointer, but not, and that it allows you to keep a ... What is a more elaborate explanation? See Question&Answers more detail:os...

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

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450 views

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python - Distributed task queues (Ex. Celery) vs crontab scripts

I'm having trouble understanding the purpose of 'distributed task queues'. For example, python's celery library. I ... be nice also. 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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ruby - How to do static content in Rails?

Looking at different options: One is to just put the static pages in the public/ folder, but I do want the ... .rhtml. who has done 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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