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Why is Node.js single threaded? [closed]
In PHP (or Java/ASP.NET/Ruby) based webservers every client request is instantiated on a new thread. But in Node.js all the clients run on the same thread (they can even share the same variables!) I understand that I/O operations are event-based so they don't block the main thread loop.
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log4j vs logback [closed]
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Logback natively implements the SLF4J API. This means that if you are using logback, you are actually using the SLF4J API. You could theoretically use the internals of the logback API directly for logging, but that is highly discouraged. All logback documentation and ex...
How do I get a value of datetime.today() in Python that is “timezone aware”?
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In the standard library, there is no cross-platform way to create aware timezones without creating your own timezone class.
On Windows, there's win32timezone.utcnow(), but that's part of pywin32. I would rather suggest to use the pytz library, which has a...
What does void* mean and how to use it?
...ing others' code, I saw something like void *func(void* i); , what does this void* mean here for the function name and for the variable type, respectively?
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Split a module across several files
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Rust's module system is actually incredibly flexible and will let you expose whatever kind of structure you want while hiding how your code is structured in files.
I think the key here is to make use of pub use, which will allow you to re-export...
T-SQL Cast versus Convert
What is the general guidance on when you should use CAST versus CONVERT ? Is there any performance issues related to choosing one versus the other? Is one closer to ANSI-SQL?
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使用 XML 和 Web 服务 · App Inventor 2 中文网
...b.XMLTextDecode takes a given XML text string and decodes it to produce a list. If the text is not well-formed XML, it will signal an error and return the empty list.
The list returned by XMLTextDecode contains one pair for each top-level tag-delimited structure in the input string. For example...
What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
What is the difference between Class.forName() and Class.forName().newInstance() ?
9 Answers
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Is Java's assertEquals method reliable?
I know that == has some issues when comparing two Strings . It seems that String.equals() is a better approach. Well, I'm doing JUnit testing and my inclination is to use assertEquals(str1, str2) . Is this a reliable way to assert two Strings contain the same content? I would use assertTr...
Difference between attr_accessor and attr_accessible
In Rails, what is the difference between attr_accessor and attr_accessible ? From my understanding, using attr_accessor is used to create getter and setter methods for that variable, so that we can access the variable like Object.variable or Object.variable = some_value .
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