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What Automatic Resource Management alternatives exist for Scala?
...sing Using :), Example:
val lines: Try[Seq[String]] =
Using(new BufferedReader(new FileReader("file.txt"))) { reader =>
Iterator.unfold(())(_ => Option(reader.readLine()).map(_ -> ())).toList
}
or using Using.resource avoid Try
val lines: Seq[String] =
Using.resource(new Buffe...
Get records with max value for each group of grouped SQL results
...ds extracted from b. They are the oldest persons from each group.
Further readings
This solution and many others are explained in the book SQL Antipatterns: Avoiding the Pitfalls of Database Programming
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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...trates (1), but not (2). How (2) is done may not be obvious if you don't already know the technique!
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Should I store generated code in source control
...ce. So in effect you have to commit the generated code only when you're already commiting the change to the source of the generated code.
– JaredPar
May 21 '09 at 17:50
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Android: How to stretch an image to the screen width while maintaining aspect ratio?
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I just read the source code for ImageView and it is basically impossible without using the subclassing solutions in this thread. In ImageView.onMeasure we get to these lines:
// Get the max possible width given our constrai...
Why is Scala's immutable Set not covariant in its type?
...bose and use "set.contains" rather than "set" (and arguably "set.contains" reads better in many cases anyway).
– Matt R
Mar 3 '11 at 20:32
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What is the fundamental difference between WebSockets and pure TCP?
I've read about WebSockets and I wonder why browser couldn't simply open trivial TCP connection and communicate with server like any other desktop application. And why this communication is possible via websockets?
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Which characters are valid/invalid in a JSON key name?
... from the horse's mouth, though, at json.org. It takes about one minute to read the entire spec end-to-end.
– Marcelo Cantos
Dec 30 '11 at 4:21
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How do I intercept a method call in C#?
...nject code directly. In runtime, meaning you'll have to use reflection to "read" every class, get its attributes and inject the appropiate call (and for that matter I think you couldn't use the Reflection.Emit method as I think Reflection.Emit wouldn't allow you to insert new code inside an already ...
How do I run git log to see changes only for a specific branch?
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shouldn't not read? git log master..<your branch> --oneline --no-merges
– Alex Nolasco
Jun 4 '14 at 21:31
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