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What is the 'cls' variable used for in Python classes?
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The distinction between "self" and "cls" is defined in PEP 8 . As Adrien said, this is not a mandatory. It's a coding style. PEP 8 says:
Function and method arguments:
Always use self for the first argument to instance methods.
Always use cls for the firs...
machine learning libraries in C# [closed]
...wesome list on GitHub. Of the frameworks listed, Accord.NET is open-source and the most popular with over 2,000 stars.
Also, check out the official machine learning library for .NET provided by Microsoft: https://github.com/dotnet/machinelearning
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There's a neural network library called AFor...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
I am currently trying to compile and test a small Android Application.
15 Answers
15
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How to insert a row in an HTML table body in JavaScript
I have an HTML table with a header and a footer:
9 Answers
9
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What does the caret operator (^) in Python do?
I ran across the caret operator in python today and trying it out, I got the following output:
5 Answers
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How to read if a checkbox is checked in PHP?
... edited Oct 20 '15 at 19:08
Andrew Thompson
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answered Dec 29 '10 at 14:07
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No Exception while type casting with a null in java
...ally print methods call String.valueOf(object) method on the input object. And in valueOf method, this check helps to avoid null pointer exception:
return (obj == null) ? "null" : obj.toString();
For rest of your confusion, calling any method on a null object should throw a null pointer exception...
How to get the IP address of the server on which my C# application is running on?
I am running a server, and I want to display my own IP address.
26 Answers
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How to write logs in text file when using java.util.logging.Logger
...ing[] args) {
Logger logger = Logger.getLogger("MyLog");
FileHandler fh;
try {
// This block configure the logger with handler and formatter
fh = new FileHandler("C:/temp/test/MyLogFile.log");
logger.addHandler(fh);
SimpleFormatter formatter...
(grep) Regex to match non-ASCII characters?
.... One program has a bug that prevents it working with non-ASCII filenames, and I have to find out how many are affected. I was going to do this with find and then do a grep to print the non-ASCII characters, and then do a wc -l to find the number. It doesn't have to be grep; I can use any stan...