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How to delete duplicate lines in a file without sorting it in Unix?
Is there a way to delete duplicate lines in a file in Unix?
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Fastest way to replace NAs in a large data.table
I have a large data.table , with many missing values scattered throughout its ~200k rows and 200 columns. I would like to re code those NA values to zeros as efficiently as possible.
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Interface or an Abstract Class: which one to use?
Please explain when I should use a PHP interface and when I should use an abstract class ?
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Get the current git hash in a Python script
I would like to include the current git hash in the output of a Python script (as a the version number of the code that generated that output).
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Create an empty object in JavaScript with {} or new Object()?
There are two different ways to create an empty object in JavaScript:
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python design patterns [closed]
I am looking for any resources that gives examples of Best Practices, Design patterns and the SOLID principles using Python.
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Why aren't superclass __init__ methods automatically invoked?
Why did the Python designers decide that subclasses' __init__() methods don't automatically call the __init__() methods of their superclasses, as in some other languages? Is the Pythonic and recommended idiom really like the following?
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Difference between final and effectively final
I'm playing with lambdas in Java 8 and I came across warning local variables referenced from a lambda expression must be final or effectively final . I know that when I use variables inside anonymous class they must be final in outer class, but still - what is the difference between final and ef...
What it the significance of the Javascript constructor property?
Trying to bend by head around Javascript's take on OO...and, like many others, running into confusion about the constructor property. In particular, the significance of the constructor property, as I can't seem to make it have any effect. E.g.:
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inline conditionals in angular.js
I was wondering if there is a way in angular to conditionally display content other than using ng-show etc. For example in backbone.js I could do something with inline content in a template like:
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