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When should I use uuid.uuid1() vs. uuid.uuid4() in python?
...ot create too many of them at the same time). I wouldn't use it if it's important that there's no connection between the uuid and the computer, as the mac address gets used to make it unique across computers.
You can create duplicates by creating more than 214 uuid1 in less than 100ns, but this is ...
Generate a random point within a circle (uniformly)
I need to generate a uniformly random point within a circle of radius R .
21 Answers
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Command line progress bar in Java
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I have implemented this sort of thing before. Its not so much about java, but what characters to send to the console.
The key is the difference between \n and \r.
\n goes to the start of a new line. But \r is just carriage return - it goes back to...
What does @synchronized() do as a singleton method in objective C?
...pecially if the singleton itself isn't thread-safe).
Edit: Adding some more information that wasn't in the original answer from 2011.
The @synchronized directive prevents multiple threads from entering any region of code that is protected by a @synchronized directive referring to the same object...
Why do some claim that Java's implementation of generics is bad?
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Bad:
Type information is lost at compile time, so at execution time you can't tell what type it's "meant" to be
Can't be used for value types (this is a biggie - in .NET a List<byte> really is backed by a byte[] for example, and no ...
App Inventor 2 实现上传文件到服务器全方案总结 · App Inventor 2 中文网
... 搜索 App Inventor 2 实现上传文件到服务器全方案总结
App Inventor 2 实现上传文件到服务器全方案总结
1、图片Base64化
2、通用（二级制）文件上...
Django Rest Framework - Could not resolve URL for hyperlinked relationship using view name “user-det
I am building a project in Django Rest Framework where users can login to view their wine cellar.
My ModelViewSets were working just fine and all of a sudden I get this frustrating error:
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Start two instances of IntelliJ IDE
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You need to configure each instance to use its own folders for config/plugins/system locations by editing idea.properties file on Windows/Linux and Info.plist on Mac. You can find the details in FAQ.
Note that normally it's not necessary since you can open multiple projects in differ...
How can I use functional programming in the real world? [closed]
...ing state, but also because they can be easily parallelized automatically for you, without you having to worry about the thread count.
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Is main() really start of a C++ program?
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No, C++ does a lot of things to "set the environment" prior to the call of main; however, main is the official start of the "user specified" part of the C++ program.
Some of the environment setup is not controllable (like the initial code to set up std::cout; however, some of the ...