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Data structure for loaded dice?
Suppose that I have an n-sided loaded die where each side k has some probability p k of coming up when I roll it. I'm curious if there is good algorithm for storing this information statically (i.e. for a fixed set of probabilities) so that I can efficiently simulate a random roll of the die.
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What is a “symbol” in Julia?
Specifically:
I am trying to use Julia's DataFrames package, specifically the readtable() function with the names option, but that requires a vector of symbols.
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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
I have been searching for resources on how to declare foreign key relationships and other constraints using code first EF 4.1 without much luck. Basically I am building the data model in code and using MVC3 to query that model. Everything works via MVC which is great (kudos to Microsoft!) but now I ...
Git submodule push
If I modify a submodule, can I push the commit back to the submodule origin, or would that require a clone?
If clone, can I store a clone inside another repository?
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Scala list concatenation, ::: vs ++
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Legacy. List was originally defined to be functional-languages-looking:
1 :: 2 :: Nil // a list
list1 ::: list2 // concatenation of two lists
list match {
case head :: tail => "non-empty"
case Nil => "empty"
}
Of course, Scala evolved other col...
Frequency table for a single variable
One last newbie pandas question for the day: How do I generate a table for a single Series?
4 Answers
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Why can't non-default arguments follow default arguments?
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All required parameters must be placed before any default arguments. Simply because they are mandatory, whereas default arguments are not. Syntactically, it would be impossible for the interpreter to decide which values match which ...
moment.js - UTC gives wrong date
Why does moment.js UTC always show the wrong date. For example from chrome's developer console:
2 Answers
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Are SVG parameters such as 'xmlns' and 'version' needed?
In about half of the svg examples I see on the internet, the code is wrapped in plain simple <svg></svg> tags.
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What's the difference between Application.ThreadException and AppDomain.CurrentDomain.UnhandledExcep
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Application.ThreadException is specific to Windows Forms. Winforms runs event handlers in response to messages sent to it by Windows. The Click event for example, I'm sure you know them. If such an event handler throws an exception then there's a back-stop inside the Winforms message loop t...