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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...st-API, which is deprecated as of Scala 2.10. Please see answers below for more current solutions.
Scala was defined with Type Erasure because the Java Virtual Machine (JVM), unlike Java, did not get generics. This means that, at run time, only the class exists, not its type parameters. In the exam...
Do asynchronous operations in ASP.NET MVC use a thread from ThreadPool on .NET 4
...do not implement asynchronous controllers, as chances are that you will do more damage than benefit. Implement them only if you have a reason to do so: for example you have identified that standard synchronous controller actions are a bottleneck to your application (after performing extensive load t...
How do I use su to execute the rest of the bash script as that user?
...hether you use sudo or su is of secondary importance, though sudo is a lot more secure and convenient.
– tripleee
Feb 24 '15 at 8:24
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Passing a method as a parameter in Ruby
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# square the dist
dist * dist
end
But it sounds like you would like more reusable chunks of code here.
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javascript set a variable if undefined
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I'm surprised this pattern isn't included in more JS libs.
– joemaller
Feb 15 '13 at 19:25
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how do I use the grep --include option for multiple file types?
... substitute; lots of times when you need this feature, you're dealing with more files than xargs will handle.
– James Moore
Aug 14 '14 at 17:54
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Difference between abstraction and encapsulation?
...ia variable templates (= generic templates for variables); with a slightly more complex syntax, e.g.:
template <typename T> constexpr T pi = T{3.1415926535};
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Select top 10 records for each category
...rs WHERE Rank <= 10
If your RankCriteria has ties then you may return more than 10 rows and Matt's solution may be better for you.
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...'>
>>> type(math.ceil(3.1))
<class 'int'>
You can find more information in PEP 3141.
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make arrayList.toArray() return more specific types
...d on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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