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Overriding fields or properties in subclasses
I have an abstract base class and I want to declare a field or a property that will have a different value in each class that inherits from this parent class.
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Maintain git repo inside another git repo
...r Git repository. This lets you clone another repository into your project and keep your commits separate.
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How can I get a count of the total number of digits in a number?
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I'm afraid ceil(log10(10)) = ceil(1) = 1, and not 2 as it should be for this question!
– ysap
Dec 19 '10 at 18:08
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How do I retrieve the number of columns in a Pandas data frame?
How do you programmatically retrieve the number of columns in a pandas dataframe? I was hoping for something like:
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How do I compute derivative using Numpy?
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Automatic Derivatives
Symbolic Differentiation
Compute derivatives by hand.
Finite differences require no external tools but are prone to numerical error and, if you're in a multivariate situation, can take a while.
Symbolic differentiation is ideal if your problem is simple enough. Symbolic...
How do you dynamically add elements to a ListView on Android?
...anyone explain or suggest a tutorial to dynamically create a ListView in android?
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Determine path of the executing script
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Here there is a simple solution for the problem. This command:
script.dir <- dirname(sys.frame(1)$ofile)
returns the path of the current script file. It works after the script was saved.
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HTML5: number input type that takes only integers?
...In the HTML5 specification, the input type "number" can have both integers and floating-point numbers. This seems incredibly short-sighted since it will only be a useful validator when your database fields are signed floating-point numbers (for unsigned ints you'll have to fall back to "pattern" val...
Getting “NoSuchMethodError: org.hamcrest.Matcher.describeMismatch” when running test in IntelliJ 10.
I'm using JUnit-dep 4.10 and Hamcrest 1.3.RC2.
14 Answers
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How to redirect stderr and stdout to different files in the same line in script?
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Just add them in one line command 2>> error 1>> output
However, note that >> is for appending if the file already has data. Whereas, > will overwrite any existing data in the file.
So, command 2> error 1> output if you do not...